System freeze and video playback crash with Nvidia 580.159.04 on KDE Wayland Environment

[berkaykrc]

Preliminary Checks

• I have read and understood the important section above.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.
• I have checked that this issue cannot be reproduced on Mozilla Firefox.
• I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

Environment:

• Zen: 1.20.2b (tarball, BuildID 20260603112716)
• Firefox base: 151.0.3
• GPU: NVIDIA GeForce RTX 4070 SUPER (0x2783)
• Driver: 580.159.04 (Open Kernel Module)
• Desktop: KDE Plasma 6.6.5 (Wayland), Qt 6.10.3
• Distro: Fedora 43, kernel 7.0.11-100

Diagnostics:

Test	Result
nvidia-vaapi-driver disabled	Still freezes
widget.dmabuf.force-enabled=false	Browser crashes on any video
widget.dmabuf.force-enabled=true	System freeze (USB drops too)
gfx.webrender.force-disabled=true	Reduces lag, freeze unclear
Fresh Firefox (no HW accel)	Works perfectly
glxtest output	NVIDIA 580.159.04, EGL, TFP=true
vaapitest	./vaapitest -d /dev/dri/renderD128 VAAPI_SUPPORTED TRUE VAAPI_HWCODECS 5456
DMABUF (on about:support)	Blocklisted by gfxInfo (FEATURE_FAILURE_DL_BLOCKLIST_NO_ID), user force-enabled

Notes:

• nvidia-drm.modeset=1 set in kernel cmdline
• MOZ_DISABLE_RDD_SANDBOX=1 required for VA-API but freeze persists without it
• Firefox 151 handles the same Nvidia 580 config without issues via software rendering

Expected behavior

Not lagging or any crash.

Actual behavior

Crash or lagging streaming

Steps to reproduce

1. Launch Zen 1.20.2b on KDE Wayland with Nvidia 580
2. Play any video (YouTube, etc.) with widget.dmabuf.force-enabled=true
3. System becomes completely unresponsive within seconds (mouse/keyboard drop sometimes)

Screenshots and videos

No response

Version

1.20.2b

What platform are you seeing the problem on?

Linux (Tarball)

What component is this issue related to?

Performance

Relevant log output if applicable

PID: 10846 (RDD Process)
           UID: 1000 (berkay-fedora)
           GID: 1000 (berkay-fedora)
        Signal: 11 (SEGV)
     Timestamp: Sun 2026-06-07 19:03:50 +03 (1h 36min ago)
  Command Line: $'/home/berkay-fedora/.tarball-installations/zen/zen -contentproc -parentBuildID 20260603112716 -prefsHandle 0:50010 -prefMapHandle 1:301361 -ipcHandle 2 -initialChannelId {192c4307-4cfe-4526-904e-52d315845ac4} -parentPid 10719 -appDir /home/berkay-fedora/.tarball-installations/zen/browser 4 rdd'
    Executable: /home/berkay-fedora/.tarball-installations/zen/zen
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-zen@68f1483418e742dca3ab6aa3adbfdf98.service
          Unit: user@1000.service
     User Unit: app-zen@68f1483418e742dca3ab6aa3adbfdf98.service
         Slice: user-1000.slice
     Owner UID: 1000 (berkay-fedora)
       Boot ID: 8add3f633b944249a9e06099251c8ee2
    Machine ID: 36f274ee397147218b9d7961bf51bda4
      Hostname: berkay-fedora
       Storage: /var/lib/systemd/coredump/core.RDD\x20Process.1000.8add3f633b944249a9e06099251c8ee2.10846.1780848230000000.zst (present)
  Size on Disk: 15.7M
       Message: Process 10846 (RDD Process) of user 1000 dumped core.
                
                Module libGLX.so.0 from rpm libglvnd-1.7.0-8.fc43.x86_64
                Module libGL.so from rpm libglvnd-1.7.0-8.fc43.x86_64
                Module libtinfo.so.6 from rpm ncurses-6.5-7.20250614.fc43.x86_64
                Module libpciaccess.so.0 from rpm libpciaccess-0.16-16.fc43.x86_64
                Module libedit.so.0 from rpm libedit-3.1-58.20260512cvs.fc43.x86_64
                Module libdrm_intel.so.1 from rpm libdrm-2.4.133-1.fc43.x86_64
                Module libdrm_amdgpu.so.1 from rpm libdrm-2.4.133-1.fc43.x86_64
                Module libxshmfence.so.1 from rpm libxshmfence-1.3.2-7.fc43.x86_64
                Module libxcb-sync.so.1 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libsensors.so.4 from rpm lm_sensors-3.6.0-23.fc43.x86_64
                Module libSPIRV-Tools.so from rpm spirv-tools-2026.1-2.fc43.x86_64
                Module libxcb-xfixes.so.0 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libxcb-randr.so.0 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libgallium-25.3.6.so from rpm mesa-25.3.6-3.fc43.x86_64
                Module libEGL_mesa.so.0 from rpm mesa-25.3.6-3.fc43.x86_64
                Module libnvidia-egl-xlib.so.1 from rpm egl-x11-1.0.5-1.fc43.x86_64
                Module libxcb-present.so.0 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libnvidia-egl-xcb.so.1 from rpm egl-x11-1.0.5-1.fc43.x86_64
                Module libnvidia-egl-gbm.so.1 from rpm egl-gbm-1.1.3-1.fc43.x86_64
                Module libwayland-server.so.0 from rpm wayland-1.24.0-1.fc43.x86_64
                Module libnvidia-egl-wayland.so.1 from rpm egl-wayland-1.1.21-1.fc43.x86_64
                Module libzstd.so.1 from rpm zstd-1.5.7-2.fc43.x86_64
                Module libelf.so.1 from rpm elfutils-0.195-1.fc43.x86_64
                Module libdw.so.1 from rpm elfutils-0.195-1.fc43.x86_64
                Module libunwind.so.8 from rpm libunwind-1.8.1-3.fc43.x86_64
                Module libgstreamer-1.0.so.0 from rpm gstreamer1-1.26.11-1.fc43.x86_64
                Module libgstbase-1.0.so.0 from rpm gstreamer1-1.26.11-1.fc43.x86_64
                Module libGLdispatch.so.0 from rpm libglvnd-1.7.0-8.fc43.x86_64
                Module libgstcodecparsers-1.0.so.0 from rpm gstreamer1-plugins-bad-free-1.26.11-1.fc43.x86_64
                Module libEGL.so.1 from rpm libglvnd-1.7.0-8.fc43.x86_64
                Module nvidia_drv_video.so from rpm libva-nvidia-driver-0.0.17-1.fc43.x86_64
                Module libexpat.so.1 from rpm expat-2.8.1-1.fc43.x86_64
                Module libgbm.so.1 from rpm mesa-25.3.6-3.fc43.x86_64
                Module libx265_main12.so.215 from rpm x265-4.1-3.fc43.x86_64
                Module libgpg-error.so.0 from rpm libgpg-error-1.55-2.fc43.x86_64
                Module libxcb-dri3.so.0 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libnuma.so.1 from rpm numactl-2.0.19-3.fc43.x86_64
                Module libsharpyuv.so.0 from rpm libwebp-1.6.0-2.fc43.x86_64
                Module libogg.so.0 from rpm libogg-1.3.6-2.fc43.x86_64
                Module libbrotlienc.so.1 from rpm brotli-1.2.0-1.fc43.x86_64
                Module liblpcnetfreedv.so.0.5 from rpm lpcnetfreedv-0.5-9.fc43.x86_64
                Module libvmaf.so.3 from rpm vmaf-3.0.0-4.fc43.x86_64
                Module libdrm.so.2 from rpm libdrm-2.4.133-1.fc43.x86_64
                Module libvdpau.so.1 from rpm libvdpau-1.5-10.fc43.x86_64
                Module libva-x11.so.2 from rpm libva-2.22.0-6.fc43.x86_64
                Module libva-drm.so.2 from rpm libva-2.22.0-6.fc43.x86_64
                Module libvpl.so.2 from rpm libvpl-2.16.0-1.fc43.x86_64
                Module libva.so.2 from rpm libva-2.22.0-6.fc43.x86_64
                Module libopenh264.so.8 from rpm openh264-2.6.0-2.fc43.x86_64
                Module libxvidcore.so.4 from rpm xvidcore-1.3.7-14.fc43.x86_64
                Module libx265.so.215 from rpm x265-4.1-3.fc43.x86_64
                Module libx264.so.165 from rpm x264-0.165-2.20250608gitb35605ac.fc43.x86_64
                Module libwebp.so.7 from rpm libwebp-1.6.0-2.fc43.x86_64
                Module libvvenc.so.1.13 from rpm vvenc-1.13.1-4.fc43.x86_64
                Module libvorbisenc.so.2 from rpm libvorbis-1.3.7-13.fc43.x86_64
                Module libvorbis.so.0 from rpm libvorbis-1.3.7-13.fc43.x86_64
                Module libtwolame.so.0 from rpm twolame-0.4.0-8.fc43.x86_64
                Module libtheoradec.so.1 from rpm libtheora-1.1.1-40.fc43.x86_64
                Module libtheoraenc.so.1 from rpm libtheora-1.1.1-40.fc43.x86_64
                Module libSvtAv1Enc.so.3 from rpm svt-av1-3.1.2-1.fc43.x86_64
                Module libspeex.so.1 from rpm speex-1.2.0-20.fc43.x86_64
                Module librav1e.so.0 from rpm rust-rav1e-0.8.1-2.fc43.x86_64
                Module libopus.so.0 from rpm opus-1.5.2-3.fc43.x86_64
                Module libopenjp2.so.7 from rpm openjpeg-2.5.4-1.fc43.x86_64
                Module libopencore-amrnb.so.0 from rpm opencore-amr-0.1.6-9.fc43.x86_64
                Module liblc3.so.1 from rpm liblc3-1.1.3-5.fc43.x86_64
                Module libilbc.so.3 from rpm ilbc-3.0.4-17.fc43.x86_64
                Module libgsm.so.1 from rpm gsm-1.0.23-1.fc43.x86_64
                Module libcodec2.so.1.2 from rpm codec2-1.2.0-7.fc43.x86_64
                Module libaom.so.3 from rpm aom-3.13.3-1.fc43.x86_64
                Module libsnappy.so.1 from rpm snappy-1.2.2-2.fc43.x86_64
                Module libzvbi.so.0 from rpm zvbi-0.2.44-2.fc43.x86_64
                Module librsvg-2.so.2 from rpm librsvg2-2.61.0-5.fc43.x86_64
                Module libopencore-amrwb.so.0 from rpm opencore-amr-0.1.6-9.fc43.x86_64
                Module libdav1d.so.7 from rpm dav1d-1.5.3-1.fc43.x86_64
                Module libaribb24.so.0 from rpm aribb24-1.0.3^20160216git5e9be27-3.fc43.x86_64
                Module libaribcaption.so.1 from rpm libaribcaption-1.1.1-3.fc43.x86_64
                Module libwebpmux.so.3 from rpm libwebp-1.6.0-2.fc43.x86_64
                Module libvpx.so.9 from rpm libvpx-1.15.0-4.fc43.x86_64
                Module libavutil.so.59 from rpm ffmpeg-7.1.4-1.fc43.x86_64
                Module libswresample.so.5 from rpm ffmpeg-7.1.4-1.fc43.x86_64
                Module libavcodec.so.61 from rpm ffmpeg-7.1.4-1.fc43.x86_64
                Module libX11-xcb.so.1 from rpm libX11-1.8.13-1.fc43.x86_64
                Module libasound.so.2 from rpm alsa-lib-1.2.15.3-1.fc43.x86_64
                Module libcap.so.2 from rpm libcap-2.76-4.fc43.x86_64
                Module libbrotlicommon.so.1 from rpm brotli-1.2.0-1.fc43.x86_64
                Module libsystemd.so.0 from rpm systemd-258.8-1.fc43.x86_64
                Module libseccomp.so.2 from rpm libseccomp-2.6.0-2.fc43.x86_64
                Module liblcms2.so.2 from rpm lcms2-2.16-6.fc43.x86_64
                Module liblzma.so.5 from rpm xz-5.8.1-4.fc43.x86_64
                Module libXau.so.6 from rpm libXau-1.0.12-3.fc43.x86_64
                Module libbrotlidec.so.1 from rpm brotli-1.2.0-1.fc43.x86_64
                Module libbz2.so.1 from rpm bzip2-1.0.8-21.fc43.x86_64
                Module libdatrie.so.1 from rpm libdatrie-0.2.13-12.fc43.x86_64
                Module libblkid.so.1 from rpm util-linux-2.41.4-7.fc43.x86_64
                Module libsqlite3.so.0 from rpm sqlite-3.50.2-2.fc43.x86_64
                Module libjson-glib-1.0.so.0 from rpm json-glib-1.10.8-4.fc43.x86_64
                Module libdbus-1.so.3 from rpm dbus-1.16.0-4.fc43.x86_64
                Module libatspi.so.0 from rpm at-spi2-core-2.58.5-1.fc43.x86_64
                Module libglycin-2.so.0 from rpm glycin-2.0.8-1.fc43.x86_64
                Module libxml2.so.2 from rpm libxml2-2.12.10-5.fc43.x86_64
                Module libpixman-1.so.0 from rpm pixman-0.46.2-2.fc43.x86_64
                Module libxcb-shm.so.0 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libxcb-render.so.0 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libxcb.so.1 from rpm libxcb-1.17.0-6.fc43.x86_64
                Module libXrender.so.1 from rpm libXrender-0.9.12-3.fc43.x86_64
                Module libpng16.so.16 from rpm libpng-1.6.58-1.fc43.x86_64
                Module libgraphite2.so.3 from rpm graphite2-1.3.14-19.fc43.x86_64
                Module libfreetype.so.6 from rpm freetype-2.13.3-3.fc43.x86_64
                Module libthai.so.0 from rpm libthai-0.1.29-11.fc43.x86_64
                Module libselinux.so.1 from rpm libselinux-3.9-5.fc43.x86_64
                Module libmount.so.1 from rpm util-linux-2.41.4-7.fc43.x86_64
                Module libz.so.1 from rpm zlib-ng-2.3.3-2.fc43.x86_64
                Module libffi.so.8 from rpm libffi-3.5.2-1.fc43.x86_64
                Module libpcre2-8.so.0 from rpm pcre2-10.47-1.fc43.x86_64
                Module libXinerama.so.1 from rpm libXinerama-1.1.5-9.fc43.x86_64
                Module libXrandr.so.2 from rpm libXrandr-1.5.4-6.fc43.x86_64
                Module libXcomposite.so.1 from rpm libXcomposite-0.4.6-6.fc43.x86_64
                Module libXdamage.so.1 from rpm libXdamage-1.1.6-6.fc43.x86_64
                Module libXcursor.so.1 from rpm libXcursor-1.2.3-3.fc43.x86_64
                Module libXext.so.6 from rpm libXext-1.3.6-4.fc43.x86_64
                Module libwayland-egl.so.1 from rpm wayland-1.24.0-1.fc43.x86_64
                Module libwayland-cursor.so.0 from rpm wayland-1.24.0-1.fc43.x86_64
                Module libxkbcommon.so.0 from rpm libxkbcommon-1.11.0-1.fc43.x86_64
                Module libXfixes.so.3 from rpm libXfixes-6.0.1-6.fc43.x86_64
                Module libwayland-client.so.0 from rpm wayland-1.24.0-1.fc43.x86_64
                Module libtinysparql-3.0.so.0 from rpm tinysparql-3.10.1-5.fc43.x86_64
                Module libcloudproviders.so.0 from rpm libcloudproviders-0.3.6-2.fc43.x86_64
                Module libatk-bridge-2.0.so.0 from rpm at-spi2-core-2.58.5-1.fc43.x86_64
                Module libX11.so.6 from rpm libX11-1.8.13-1.fc43.x86_64
                Module libXi.so.6 from rpm libXi-1.8.2-3.fc43.x86_64
                Module libepoxy.so.0 from rpm libepoxy-1.5.10-11.fc43.x86_64
                Module libatk-1.0.so.0 from rpm at-spi2-core-2.58.5-1.fc43.x86_64
                Module libgdk_pixbuf-2.0.so.0 from rpm gdk-pixbuf2-2.44.6^really2.44.4-1.fc43.x86_64
                Module libcairo-gobject.so.2 from rpm cairo-1.18.4-2.fc43.x86_64
                Module libfribidi.so.0 from rpm fribidi-1.0.16-3.fc43.x86_64
                Module libfontconfig.so.1 from rpm fontconfig-2.17.0-3.fc43.x86_64
                Module libpangoft2-1.0.so.0 from rpm pango-1.57.1-1.fc43.x86_64
                Module libcairo.so.2 from rpm cairo-1.18.4-2.fc43.x86_64
                Module libharfbuzz.so.0 from rpm harfbuzz-11.5.1-2.fc43.x86_64
                Module libpango-1.0.so.0 from rpm pango-1.57.1-1.fc43.x86_64
                Module libpangocairo-1.0.so.0 from rpm pango-1.57.1-1.fc43.x86_64
                Module libgio-2.0.so.0 from rpm glib2-2.86.5-1.fc43.x86_64
                Module libgobject-2.0.so.0 from rpm glib2-2.86.5-1.fc43.x86_64
                Module libglib-2.0.so.0 from rpm glib2-2.86.5-1.fc43.x86_64
                Module libgmodule-2.0.so.0 from rpm glib2-2.86.5-1.fc43.x86_64
                Module libgdk-3.so.0 from rpm gtk3-3.24.52-1.fc43.x86_64
                Module libgtk-3.so.0 from rpm gtk3-3.24.52-1.fc43.x86_64
                Stack trace of thread 47326:
                #0  0x00007fdd83780979 n/a (libnvcuvid.so.1 + 0x180979)
                #1  0x00007fdd837824ce n/a (libnvcuvid.so.1 + 0x1824ce)
                #2  0x00007fdd83649e94 n/a (libnvcuvid.so.1 + 0x49e94)
                #3  0x00007fdd8362a21b n/a (libnvcuvid.so.1 + 0x2a21b)
                #4  0x00007fdd83630de0 n/a (libnvcuvid.so.1 + 0x30de0)
                #5  0x00007fdd9ba8b3ae nvQuerySurfaceAttributes (nvidia_drv_video.so + 0xa3ae)
                #6  0x00007fdd8e73d1ad vaQuerySurfaceAttributes (libva.so.2 + 0xb1ad)
                #7  0x00007fdd916061ea vaapi_decode_make_config (libavcodec.so.61 + 0x6061ea)
                #8  0x00007fdd91606606 ff_vaapi_common_frame_params (libavcodec.so.61 + 0x606606)
                #9  0x00007fdd911fd502 avcodec_get_hw_frames_parameters (libavcodec.so.61 + 0x1fd502)
                #10 0x00007fdd911fd62b ff_decode_get_hw_frames_ctx (libavcodec.so.61 + 0x1fd62b)
                #11 0x00007fdd9160667e ff_vaapi_decode_init (libavcodec.so.61 + 0x60667e)
                #12 0x00007fdd911fd90a ff_get_format (libavcodec.so.61 + 0x1fd90a)
                #13 0x00007fdd912ee16e get_pixel_format (libavcodec.so.61 + 0x2ee16e)
                #14 0x00007fdd912f69f6 h264_init_ps.lto_priv.0 (libavcodec.so.61 + 0x2f69f6)
                #15 0x00007fdd913047fa ff_h264_queue_decode_slice (libavcodec.so.61 + 0x3047fa)
                #16 0x00007fdd91307a64 h264_decode_frame.lto_priv.0 (libavcodec.so.61 + 0x307a64)
                #17 0x00007fdd912009f5 ff_decode_receive_frame_internal (libavcodec.so.61 + 0x2009f5)
                #18 0x00007fdd912016f4 decode_receive_frame_internal.lto_priv.0 (libavcodec.so.61 + 0x2016f4)
                #19 0x00007fdd912020a3 avcodec_send_packet (libavcodec.so.61 + 0x2020a3)
                #20 0x00007fdda435deb0 n/a (libxul.so + 0x875deb0)
                #21 0x00007fdda4302cb9 n/a (libxul.so + 0x8702cb9)
                #22 0x00007fdda4354ad0 n/a (libxul.so + 0x8754ad0)
                #23 0x00007fdda42b4c4b n/a (libxul.so + 0x86b4c4b)
                #24 0x00007fdda0d1bf04 n/a (libxul.so + 0x511bf04)
                #25 0x00007fdda0d1b05d n/a (libxul.so + 0x511b05d)
                #26 0x00007fdda01304c6 n/a (libxul.so + 0x45304c6)
                #27 0x00007fdda012e990 n/a (libxul.so + 0x452e990)
                #28 0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #29 0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #30 0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #31 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 10850:
                #0  0x00007fddb250030d syscall (libc.so.6 + 0xf330d)
                #1  0x00007fdda0141b57 n/a (libxul.so + 0x4541b57)
                #2  0x00007fdda01407c7 n/a (libxul.so + 0x45407c7)
                #3  0x00007fdda194326a n/a (libxul.so + 0x5d4326a)
                #4  0x00007fdda19430e7 n/a (libxul.so + 0x5d430e7)
                #5  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #6  0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 10849:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247bbe4 __syscall_cancel (libc.so.6 + 0x6ebe4)
                #3  0x00007fddb24f56be read (libc.so.6 + 0xe86be)
                #4  0x00007fdda194249a n/a (libxul.so + 0x5d4249a)
                #5  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #6  0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 15666:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247eae8 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x71ae8)
                #4  0x00007fdd84c6a08a n/a (libcuda.so.1 + 0x26a08a)
                #5  0x00007fdd84d06d73 n/a (libcuda.so.1 + 0x306d73)
                #6  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #7  0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 11583:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247e8de pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x718de)
                #4  0x000055c99a0308ba _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc28ba)
                #5  0x00007fdda008f5e3 n/a (libxul.so + 0x448f5e3)
                #6  0x00007fdda01304c6 n/a (libxul.so + 0x45304c6)
                #7  0x00007fdda012e990 n/a (libxul.so + 0x452e990)
                #8  0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #9  0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #10 0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #11 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 46945:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247e8de pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x718de)
                #4  0x00007fdd9ba8d6b7 resolveSurfaces (nvidia_drv_video.so + 0xc6b7)
                #5  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #6  0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 10887:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247e8de pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x718de)
                #4  0x000055c99a030706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fdda012f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fdda012e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #9  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #10 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 11188:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247bbe4 __syscall_cancel (libc.so.6 + 0x6ebe4)
                #3  0x00007fddb24f515e __poll (libc.so.6 + 0xe815e)
                #4  0x00007fdd84d19f27 n/a (libcuda.so.1 + 0x319f27)
                #5  0x00007fdd84e06967 n/a (libcuda.so.1 + 0x406967)
                #6  0x00007fdd84d06d73 n/a (libcuda.so.1 + 0x306d73)
                #7  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #8  0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 15667:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247bbe4 __syscall_cancel (libc.so.6 + 0x6ebe4)
                #3  0x00007fddb24f515e __poll (libc.so.6 + 0xe815e)
                #4  0x00007fdd84d19f27 n/a (libcuda.so.1 + 0x319f27)
                #5  0x00007fdd84e06967 n/a (libcuda.so.1 + 0x406967)
                #6  0x00007fdd84d06d73 n/a (libcuda.so.1 + 0x306d73)
                #7  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #8  0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 10846:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247bbe4 __syscall_cancel (libc.so.6 + 0x6ebe4)
                #3  0x00007fddb24f515e __poll (libc.so.6 + 0xe815e)
                #4  0x00007fdda4c33237 n/a (libxul.so + 0x9033237)
                #5  0x00007fdda8af3254 g_main_context_iterate_unlocked.isra.0 (libglib-2.0.so.0 + 0x4a254)
                #6  0x00007fdda8af3463 g_main_context_iteration (libglib-2.0.so.0 + 0x4a463)
                #7  0x00007fdda012f3e5 n/a (libxul.so + 0x452f3e5)
                #8  0x00007fdda012d95f n/a (libxul.so + 0x452d95f)
                #9  0x00007fdda0d685ba n/a (libxul.so + 0x51685ba)
                #10 0x00007fdda0d683fc n/a (libxul.so + 0x51683fc)
                #11 0x00007fdda0d6831d n/a (libxul.so + 0x516831d)
                #12 0x00007fdda1f1aa7d n/a (libxul.so + 0x631aa7d)
                #13 0x00007fdda1f1c306 n/a (libxul.so + 0x631c306)
                #14 0x000055c999fde2d5 n/a (zen + 0x702d5)
                #15 0x00007fddb24105b5 __libc_start_call_main (libc.so.6 + 0x35b5)
                #16 0x00007fddb2410668 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3668)
                #17 0x000055c999ff439b _start (zen + 0x8639b)
                
                Stack trace of thread 46944:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247eae8 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x71ae8)
                #4  0x00007fdd8369b83a n/a (libnvcuvid.so.1 + 0x9b83a)
                #5  0x00007fdd8369a836 n/a (libnvcuvid.so.1 + 0x9a836)
                #6  0x00007fdd8364cefc n/a (libnvcuvid.so.1 + 0x4cefc)
                #7  0x00007fdd8369ac05 n/a (libnvcuvid.so.1 + 0x9ac05)
                #8  0x00007fdd8369b2dd n/a (libnvcuvid.so.1 + 0x9b2dd)
                #9  0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #10 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 47377:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247eae8 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x71ae8)
                #4  0x000055c99a03083f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                #5  0x00007fdda0d1ae92 n/a (libxul.so + 0x511ae92)
                #6  0x00007fdda01304c6 n/a (libxul.so + 0x45304c6)
                #7  0x00007fdda012e990 n/a (libxul.so + 0x452e990)
                #8  0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #9  0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #10 0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #11 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 47330:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247eae8 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x71ae8)
                #4  0x000055c99a03083f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                #5  0x00007fdda0d1ae92 n/a (libxul.so + 0x511ae92)
                #6  0x00007fdda01304c6 n/a (libxul.so + 0x45304c6)
                #7  0x00007fdda012e990 n/a (libxul.so + 0x452e990)
                #8  0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #9  0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #10 0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #11 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 47490:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247eae8 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x71ae8)
                #4  0x000055c99a03083f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                #5  0x00007fdda0d1ae92 n/a (libxul.so + 0x511ae92)
                #6  0x00007fdda01304c6 n/a (libxul.so + 0x45304c6)
                #7  0x00007fdda012e990 n/a (libxul.so + 0x452e990)
                #8  0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #9  0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #10 0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #11 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 47464:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb24cbb22 clock_nanosleep@GLIBC_2.2.5 (libc.so.6 + 0xbeb22)
                #3  0x00007fddb24d7af7 __nanosleep (libc.so.6 + 0xcaaf7)
                #4  0x00007fddb25020fa usleep (libc.so.6 + 0xf50fa)
                #5  0x00007fdd83630d6f n/a (libnvcuvid.so.1 + 0x30d6f)
                #6  0x00007fdd9ba8b3ae nvQuerySurfaceAttributes (nvidia_drv_video.so + 0xa3ae)
                #7  0x00007fdd8e73d1ad vaQuerySurfaceAttributes (libva.so.2 + 0xb1ad)
                #8  0x00007fdd8fe29d05 vaapi_frames_get_constraints.lto_priv.0 (libavutil.so.59 + 0x29d05)
                #9  0x00007fdd8fe23546 av_hwdevice_get_hwframe_constraints (libavutil.so.59 + 0x23546)
                #10 0x00007fdd916060e9 vaapi_decode_make_config (libavcodec.so.61 + 0x6060e9)
                #11 0x00007fdd91606606 ff_vaapi_common_frame_params (libavcodec.so.61 + 0x606606)
                #12 0x00007fdd911fd502 avcodec_get_hw_frames_parameters (libavcodec.so.61 + 0x1fd502)
                #13 0x00007fdd911fd62b ff_decode_get_hw_frames_ctx (libavcodec.so.61 + 0x1fd62b)
                #14 0x00007fdd9160667e ff_vaapi_decode_init (libavcodec.so.61 + 0x60667e)
                #15 0x00007fdd911fd90a ff_get_format (libavcodec.so.61 + 0x1fd90a)
                #16 0x00007fdd912ee16e get_pixel_format (libavcodec.so.61 + 0x2ee16e)
                #17 0x00007fdd912f69f6 h264_init_ps.lto_priv.0 (libavcodec.so.61 + 0x2f69f6)
                #18 0x00007fdd913047fa ff_h264_queue_decode_slice (libavcodec.so.61 + 0x3047fa)
                #19 0x00007fdd91307a64 h264_decode_frame.lto_priv.0 (libavcodec.so.61 + 0x307a64)
                #20 0x00007fdd912009f5 ff_decode_receive_frame_internal (libavcodec.so.61 + 0x2009f5)
                #21 0x00007fdd912016f4 decode_receive_frame_internal.lto_priv.0 (libavcodec.so.61 + 0x2016f4)
                #22 0x00007fdd912020a3 avcodec_send_packet (libavcodec.so.61 + 0x2020a3)
                #23 0x00007fdda435deb0 n/a (libxul.so + 0x875deb0)
                #24 0x00007fdda4302cb9 n/a (libxul.so + 0x8702cb9)
                #25 0x00007fdda4354ad0 n/a (libxul.so + 0x8754ad0)
                #26 0x00007fdda42b4c4b n/a (libxul.so + 0x86b4c4b)
                #27 0x00007fdda0d1bf04 n/a (libxul.so + 0x511bf04)
                #28 0x00007fdda0d1b05d n/a (libxul.so + 0x511b05d)
                #29 0x00007fdda01304c6 n/a (libxul.so + 0x45304c6)
                #30 0x00007fdda012e990 n/a (libxul.so + 0x452e990)
                #31 0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #32 0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #33 0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #34 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                
                Stack trace of thread 47483:
                #0  0x00007fddb2487902 __syscall_cancel_arch (libc.so.6 + 0x7a902)
                #1  0x00007fddb247bb9c __internal_syscall_cancel (libc.so.6 + 0x6eb9c)
                #2  0x00007fddb247c20c __futex_abstimed_wait_common (libc.so.6 + 0x6f20c)
                #3  0x00007fddb247eae8 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x71ae8)
                #4  0x000055c99a03083f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                #5  0x00007fdda0d1ae92 n/a (libxul.so + 0x511ae92)
                #6  0x00007fdda01304c6 n/a (libxul.so + 0x45304c6)
                #7  0x00007fdda012e990 n/a (libxul.so + 0x452e990)
                #8  0x00007fdda1945920 n/a (libxul.so + 0x5d45920)
                #9  0x00007fddb23f07df n/a (libnspr4.so + 0x217df)
                #10 0x00007fddb247f3c4 start_thread (libc.so.6 + 0x723c4)
                #11 0x00007fddb250256c __clone3 (libc.so.6 + 0xf556c)
                ELF object binary architecture: AMD x86-64

[Propheticus]

Have you tested while running everything at default settings? An easy way would be creating a clean profile in about:profiles.

This looks related: https://bugzilla.mozilla.org/show_bug.cgi?id=1788573 ... or at least links to a lot of issues that revolve around va-api and dmabuf. Reading those I see Firefox devs state issues are expected when forcing vaapi and
"To avoid crashes turn off gfx.webrender.compositor / gfx.webrender.compositor.force-enabled / gfx.wayland.hdr prefs at about:config."

Perhaps worth trying the 595.80 driver instead of the legacy 580.159 ?

[berkaykrc]

Have you tested while running everything at default settings? An easy way would be creating a clean profile in about:profiles.

This looks related: https://bugzilla.mozilla.org/show_bug.cgi?id=1788573 ... or at least links to a lot of issues that revolve around va-api and dmabuf. Reading those I see Firefox devs state issues are expected when forcing vaapi and "To avoid crashes turn off gfx.webrender.compositor / gfx.webrender.compositor.force-enabled / gfx.wayland.hdr prefs at about:config."

Perhaps worth trying the 595.80 driver instead of the legacy 580.159 ?

Yes with new profile and new download from releases zen.linux-x86_64.tar.xz has same issue. I have to stay at R580-Linux (LTSB) 58x.xxx branch because my laptop also has Nvidia GPU(GTX 950M). gfx.webrender.compositor is default false, gfx.webrender.compositor.force-enabled tried it and documented on body of issue with true/false, gfx.wayland.hdr i couldn't find this flag specifically but there is gfx.webrender.overlay-hdr assuming its same and I do not have HDR monitor or comsume content but making it false did not change performance. Also tried this link there is no lag at all https://webglsamples.org/lots-o-objects/lots-o-objects-draw-elements.html?alpha=true&antialias=true&preserveDrawingBuffer=true&blend=false but on Twitch, Youtube, Reddit if gif or video played, twitter is lagging. It %100 Vaapi and but not lagging on Firefox but Zen is my blocker.

[Hilaeh]

Hello,
I am just popping in to say I have a very similar issue.
I am on fedora 44 with rtx 3080, driver version: 595.80. Wayland
Zen version: 1.20.2b (64-bit).

Those are my envirement virables in /home/ja1/.bash_profile :
export LIBVA_DRIVER_NAME=nvidia
export NVD_BACKEND=direct
export MOZ_DISABLE_RDD_SANDBOX=1
export CUDA_DISABLE_PERF_BOOST=1

Setting media.hardware-video-decoding.force-enabled to true causes the zen browser to crash when youtube is attempting to play a video, no system freeze though.
I have checked on stock firefox and it works fine.
The command: nvidia-smi dmon -s u shows decoding to be used when playing a video on firefox, so I assume that it is actually working.
Hardware decoding functional on firefox, but with the same settings crashing on zen suggests that it is a zen issue.

The crash output

           PID: 65780 (zen)
           UID: 1000 (ja1)
           GID: 1000 (ja1)
        Signal: 11 (SEGV)
     Timestamp: Tue 2026-06-09 11:16:10 CEST (15s ago)
  Command Line: /home/ja1/Programs/zen-browser/zen
    Executable: /home/ja1/Programs/zen-browser/zen
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-zen@149d14742efa447bbd3880679db0a549.service
          Unit: user@1000.service
     User Unit: app-zen@149d14742efa447bbd3880679db0a549.service
         Slice: user-1000.slice
     Owner UID: 1000 (ja1)
       Boot ID: d45c65f8a5f74061b6de838588cf2456
    Machine ID: 6d1d714e32344ca8b3b176b7155c7f71
      Hostname: fedora
       Storage: /var/lib/systemd/coredump/core.zen.1000.d45c65f8a5f74061b6de838588cf2456.65780.1780996570000000.zst (present)
  Size on Disk: 68.4M
       Message: Process 65780 (zen) of user 1000 dumped core.
                
                Module libnss_resolve.so.2 from rpm systemd-259.6-1.fc44.x86_64
                Module libnss_mdns4_minimal.so.2 from rpm nss-mdns-0.15.1-28.fc44.x86_64
                Module libwindow-decorations-gtk-module.so from rpm kde-gtk-config-6.6.5-1.fc44.x86_64
                Module libcolorreload-gtk-module.so from rpm kde-gtk-config-6.6.5-1.fc44.x86_64
                Module libnss_systemd.so.2 from rpm systemd-259.6-1.fc44.x86_64
                Module libtinfo.so.6 from rpm ncurses-6.6-1.fc44.x86_64
                Module libpciaccess.so.0 from rpm libpciaccess-0.16-17.fc44.x86_64
                Module libedit.so.0 from rpm libedit-3.1-59.20260512cvs.fc44.x86_64
                Module libdrm_intel.so.1 from rpm libdrm-2.4.134-1.fc44.x86_64
                Module libdrm_amdgpu.so.1 from rpm libdrm-2.4.134-1.fc44.x86_64
                Module libelf.so.1 from rpm elfutils-0.195-1.fc44.x86_64
                Module libxshmfence.so.1 from rpm libxshmfence-1.3.2-8.fc44.x86_64
                Module libxcb-sync.so.1 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libsensors.so.4 from rpm lm_sensors-3.6.0-24.fc44.x86_64
                Module libSPIRV-Tools.so from rpm spirv-tools-2026.1-1.fc44.x86_64
                Module libzstd.so.1 from rpm zstd-1.5.7-5.fc44.x86_64
                Module libxcb-xfixes.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libxcb-randr.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libgallium-26.0.8.so from rpm mesa-26.0.8-1.fc44.x86_64
                Module libEGL_mesa.so.0 from rpm mesa-26.0.8-1.fc44.x86_64
                Module libnvidia-egl-xlib.so.1 from rpm egl-x11-1.0.5-1.fc44.x86_64
                Module libxcb-dri3.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libxcb-present.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libnvidia-egl-xcb.so.1 from rpm egl-x11-1.0.5-1.fc44.x86_64
                Module libnvidia-egl-gbm.so.1 from rpm egl-gbm-1.1.3-2.fc44.x86_64
                Module libwayland-server.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                Module libnvidia-egl-wayland.so.1 from rpm egl-wayland-1.1.21-2.fc44.x86_64
                Module libnvidia-egl-wayland2.so.1 from rpm egl-wayland2-1.0.1-1.fc44.x86_64
                Module libGLX.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
                Module libGL.so from rpm libglvnd-1.7.0-9.fc44.x86_64
                Module libGLdispatch.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
                Module libEGL.so from rpm libglvnd-1.7.0-9.fc44.x86_64
                Module libexpat.so.1 from rpm expat-2.8.1-1.fc44.x86_64
                Module libdrm.so.2 from rpm libdrm-2.4.134-1.fc44.x86_64
                Module libgbm.so.1 from rpm mesa-26.0.8-1.fc44.x86_64
                Module libmpg123.so.0 from rpm mpg123-1.32.10-3.fc44.x86_64
                Module libogg.so.0 from rpm libogg-1.3.6-2.fc44.x86_64
                Module libopus.so.0 from rpm opus-1.6-2.fc44.x86_64
                Module libvorbisenc.so.2 from rpm libvorbis-1.3.7-14.fc44.x86_64
                Module libvorbis.so.0 from rpm libvorbis-1.3.7-14.fc44.x86_64
                Module libFLAC.so.14 from rpm flac-1.5.0-8.fc44.x86_64
                Module libgsm.so.1 from rpm gsm-1.0.24-2.fc44.x86_64
                Module libsndfile.so.1 from rpm libsndfile-1.2.2-11.fc44.x86_64
                Module libpulsecommon-17.0.so from rpm pulseaudio-17.0-9.fc44.x86_64
                Module libpulse.so.0 from rpm pulseaudio-17.0-9.fc44.x86_64
                Module libuuid.so.1 from rpm util-linux-2.41.4-8.fc44.x86_64
                Module libSM.so.6 from rpm libSM-1.2.5-4.fc44.x86_64
                Module libICE.so.6 from rpm libICE-1.1.2-4.fc44.x86_64
                Module libnss_myhostname.so.2 from rpm systemd-259.6-1.fc44.x86_64
                Module libgvfscommon.so from rpm gvfs-1.60.0-1.fc44.x86_64
                Module libgvfsdbus.so from rpm gvfs-1.60.0-1.fc44.x86_64
                Module libdconfsettings.so from rpm dconf-0.49.0-5.fc44.x86_64
                Module libX11-xcb.so.1 from rpm libX11-1.8.13-1.fc44.x86_64
                Module libasound.so.2 from rpm alsa-lib-1.2.16-2.fc44.x86_64
                Module libbrotlicommon.so.1 from rpm brotli-1.2.0-3.fc44.x86_64
                Module libsystemd.so.0 from rpm systemd-259.6-1.fc44.x86_64
                Module libseccomp.so.2 from rpm libseccomp-2.6.0-3.fc44.x86_64
                Module liblcms2.so.2 from rpm lcms2-2.16-7.fc44.x86_64
                Module liblzma.so.5 from rpm xz-5.8.2-2.fc44.x86_64
                Module libXau.so.6 from rpm libXau-1.0.12-4.fc44.x86_64
                Module libbrotlidec.so.1 from rpm brotli-1.2.0-3.fc44.x86_64
                Module libbz2.so.1 from rpm bzip2-1.0.8-23.fc44.x86_64
                Module libdatrie.so.1 from rpm libdatrie-0.2.14-2.fc44.x86_64
                Module libblkid.so.1 from rpm util-linux-2.41.4-8.fc44.x86_64
                Module libsqlite3.so.0 from rpm sqlite-3.51.2-1.fc44.x86_64
                Module libjson-glib-1.0.so.0 from rpm json-glib-1.10.8-5.fc44.x86_64
                Module libdbus-1.so.3 from rpm dbus-1.16.2-1.fc44.x86_64
                Module libatspi.so.0 from rpm at-spi2-core-2.60.4-1.fc44.x86_64
                Module libglycin-2.so.0 from rpm glycin-2.1.1-1.fc44.x86_64
                Module libxml2.so.2 from rpm libxml2-2.12.10-6.fc44.x86_64
                Module libgraphite2.so.3 from rpm graphite2-1.3.14-20.fc44.x86_64
                Module libpixman-1.so.0 from rpm pixman-0.46.2-3.fc44.x86_64
                Module libxcb-shm.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libxcb-render.so.0 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libxcb.so.1 from rpm libxcb-1.17.0-7.fc44.x86_64
                Module libXrender.so.1 from rpm libXrender-0.9.12-4.fc44.x86_64
                Module libfreetype.so.6 from rpm freetype-2.14.3-1.fc44.x86_64
                Module libpng16.so.16 from rpm libpng-1.6.58-1.fc44.x86_64
                Module libthai.so.0 from rpm libthai-0.1.30-2.fc44.x86_64
                Module libselinux.so.1 from rpm libselinux-3.10-1.fc44.x86_64
                Module libmount.so.1 from rpm util-linux-2.41.4-8.fc44.x86_64
                Module libz.so.1 from rpm zlib-ng-2.3.3-3.fc44.x86_64
                Module libffi.so.8 from rpm libffi-3.5.2-2.fc44.x86_64
                Module libpcre2-8.so.0 from rpm pcre2-10.47-1.fc44.1.x86_64
                Module libXinerama.so.1 from rpm libXinerama-1.1.5-10.fc44.x86_64
                Module libXrandr.so.2 from rpm libXrandr-1.5.4-7.fc44.x86_64
                Module libXcomposite.so.1 from rpm libXcomposite-0.4.6-7.fc44.x86_64
                Module libXdamage.so.1 from rpm libXdamage-1.1.6-7.fc44.x86_64
                Module libXcursor.so.1 from rpm libXcursor-1.2.3-4.fc44.x86_64
                Module libXext.so.6 from rpm libXext-1.3.6-5.fc44.x86_64
                Module libwayland-egl.so.1 from rpm wayland-1.24.0-3.fc44.x86_64
                Module libwayland-cursor.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                Module libxkbcommon.so.0 from rpm libxkbcommon-1.13.1-2.fc44.x86_64
                Module libXfixes.so.3 from rpm libXfixes-6.0.1-7.fc44.x86_64
                Module libwayland-client.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                Module libtinysparql-3.0.so.0 from rpm tinysparql-3.11.1-1.fc44.x86_64
                Module libcloudproviders.so.0 from rpm libcloudproviders-0.4.0-1.fc44.x86_64
                Module libatk-bridge-2.0.so.0 from rpm at-spi2-core-2.60.4-1.fc44.x86_64
                Module libX11.so.6 from rpm libX11-1.8.13-1.fc44.x86_64
                Module libXi.so.6 from rpm libXi-1.8.3-1.fc44.x86_64
                Module libepoxy.so.0 from rpm libepoxy-1.5.10-12.fc44.x86_64
                Module libatk-1.0.so.0 from rpm at-spi2-core-2.60.4-1.fc44.x86_64
                Module libgdk_pixbuf-2.0.so.0 from rpm gdk-pixbuf2-2.44.4-2.fc44.x86_64
                Module libcairo-gobject.so.2 from rpm cairo-1.18.4-6.fc44.x86_64
                Module libfribidi.so.0 from rpm fribidi-1.0.16-4.fc44.x86_64
                Module libfontconfig.so.1 from rpm fontconfig-2.17.0-4.fc44.x86_64
                Module libpangoft2-1.0.so.0 from rpm pango-1.57.1-1.fc44.x86_64
                Module libharfbuzz.so.0 from rpm harfbuzz-14.1.0-2.fc44.x86_64
                Module libcairo.so.2 from rpm cairo-1.18.4-6.fc44.x86_64
                Module libpango-1.0.so.0 from rpm pango-1.57.1-1.fc44.x86_64
                Module libpangocairo-1.0.so.0 from rpm pango-1.57.1-1.fc44.x86_64
                Module libgio-2.0.so.0 from rpm glib2-2.88.1-1.fc44.x86_64
                Module libgobject-2.0.so.0 from rpm glib2-2.88.1-1.fc44.x86_64
                Module libglib-2.0.so.0 from rpm glib2-2.88.1-1.fc44.x86_64
                Module libgmodule-2.0.so.0 from rpm glib2-2.88.1-1.fc44.x86_64
                Module libgdk-3.so.0 from rpm gtk3-3.24.52-1.fc44.x86_64
                Module libgtk-3.so.0 from rpm gtk3-3.24.52-1.fc44.x86_64
                Stack trace of thread 65780:
                #0  0x00007fd298137dcc __pthread_kill_implementation (libc.so.6 + 0x74dcc)
                #1  0x00007fd2980dcf8e raise (libc.so.6 + 0x19f8e)
                #2  0x00007fd28a43833c n/a (libxul.so + 0x963833c)
                #3  0x00007fd2980dd0b0 __restore_rt (libc.so.6 + 0x1a0b0)
                #4  0x00007fd289e5b50d n/a (libxul.so + 0x905b50d)
                #5  0x00007fd28d5f6f7e wl_log (libwayland-client.so.0 + 0xf7e)
                #6  0x00007fd28d5f72fe display_handle_error (libwayland-client.so.0 + 0x12fe)
                #7  0x00007fd28d4a0056 ffi_call_unix64 (libffi.so.8 + 0x8056)
                #8  0x00007fd28d49c05c ffi_call_int.lto_priv.0 (libffi.so.8 + 0x405c)
                #9  0x00007fd28d49ed8e ffi_call (libffi.so.8 + 0x6d8e)
                #10 0x00007fd28d5f7f6b wl_closure_invoke.constprop.0 (libwayland-client.so.0 + 0x1f6b)
                #11 0x00007fd28d5f8e19 dispatch_event (libwayland-client.so.0 + 0x2e19)
                #12 0x00007fd28d5f9207 wl_display_dispatch_queue_pending (libwayland-client.so.0 + 0x3207)
                #13 0x00007fd28e145e20 _gdk_wayland_display_queue_events (libgdk-3.so.0 + 0x46e20)
                #14 0x00007fd28e10e7ab gdk_display_get_event (libgdk-3.so.0 + 0xf7ab)
                #15 0x00007fd28e14e66e gdk_event_source_dispatch (libgdk-3.so.0 + 0x4f66e)
                #16 0x00007fd28dfe0f24 g_main_context_dispatch_unlocked.lto_priv.0 (libglib-2.0.so.0 + 0x43f24)
                #17 0x00007fd28dfe5038 g_main_context_iterate_unlocked.isra.0 (libglib-2.0.so.0 + 0x48038)
                #18 0x00007fd28dfe51e3 g_main_context_iteration (libglib-2.0.so.0 + 0x481e3)
                #19 0x00007fd28532efd8 n/a (libxul.so + 0x452efd8)
                #20 0x00007fd28532d765 n/a (libxul.so + 0x452d765)
                #21 0x00007fd285f685ba n/a (libxul.so + 0x51685ba)
                #22 0x00007fd285f683fc n/a (libxul.so + 0x51683fc)
                #23 0x00007fd286cd0571 n/a (libxul.so + 0x5ed0571)
                #24 0x00007fd2874f95f9 n/a (libxul.so + 0x66f95f9)
                #25 0x00007fd287117cf0 n/a (libxul.so + 0x6317cf0)
                #26 0x00007fd287603dcd n/a (libxul.so + 0x6803dcd)
                #27 0x000055889445d3d7 n/a (zen + 0x703d7)
                #28 0x00007fd2980c6681 __libc_start_call_main (libc.so.6 + 0x3681)
                #29 0x00007fd2980c6798 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3798)
                #30 0x000055889447339b _start (zen + 0x8639b)
                
                Stack trace of thread 65788:
                #0  0x00007fd2986eba68 n/a (linux-vdso.so.1 + 0xa68)
                #1  0x00007fd298181c9d clock_gettime@@GLIBC_2.17 (libc.so.6 + 0xbec9d)
                #2  0x00007fd298174bd7 clock (libc.so.6 + 0xb1bd7)
                #3  0x00007fd289e5eb37 n/a (libxul.so + 0x905eb37)
                #4  0x00007fd289e5f56b n/a (libxul.so + 0x905f56b)
                #5  0x00007fd289e5f6b0 n/a (libxul.so + 0x905f6b0)
                #6  0x00007fd289e5f7e0 n/a (libxul.so + 0x905f7e0)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65786:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd28e0164a9 g_cond_wait_until (libglib-2.0.so.0 + 0x794a9)
                #2  0x00007fd28dfa754d g_async_queue_pop_intern_unlocked (libglib-2.0.so.0 + 0xa54d)
                #3  0x00007fd28dfa76cd g_async_queue_timeout_pop (libglib-2.0.so.0 + 0xa6cd)
                #4  0x00007fd28e01ca50 g_thread_pool_thread_proxy (libglib-2.0.so.0 + 0x7fa50)
                #5  0x00007fd28e01ad12 g_thread_proxy (libglib-2.0.so.0 + 0x7dd12)
                #6  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #7  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65787:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd28e0154eb g_cond_wait (libglib-2.0.so.0 + 0x784eb)
                #2  0x00007fd28dfa758c g_async_queue_pop_intern_unlocked (libglib-2.0.so.0 + 0xa58c)
                #3  0x00007fd28dfa7605 g_async_queue_pop (libglib-2.0.so.0 + 0xa605)
                #4  0x00007fd28f56c74c fc_thread_func (libpangoft2-1.0.so.0 + 0x474c)
                #5  0x00007fd28e01ad12 g_thread_proxy (libglib-2.0.so.0 + 0x7dd12)
                #6  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #7  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65792:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285e9b877 n/a (libxul.so + 0x509b877)
                #2  0x00007fd285e9c8b1 n/a (libxul.so + 0x509c8b1)
                #3  0x00007fd2872c5e2b n/a (libxul.so + 0x64c5e2b)
                #4  0x00007fd2878c83df n/a (libxul.so + 0x6ac83df)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65789:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd28e0164a9 g_cond_wait_until (libglib-2.0.so.0 + 0x794a9)
                #2  0x00007fd28dfa754d g_async_queue_pop_intern_unlocked (libglib-2.0.so.0 + 0xa54d)
                #3  0x00007fd28dfa76cd g_async_queue_timeout_pop (libglib-2.0.so.0 + 0xa6cd)
                #4  0x00007fd28e01ca50 g_thread_pool_thread_proxy (libglib-2.0.so.0 + 0x7fa50)
                #5  0x00007fd28e01ad12 g_thread_proxy (libglib-2.0.so.0 + 0x7dd12)
                #6  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #7  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65808:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd28e0164a9 g_cond_wait_until (libglib-2.0.so.0 + 0x794a9)
                #2  0x00007fd28dfa754d g_async_queue_pop_intern_unlocked (libglib-2.0.so.0 + 0xa54d)
                #3  0x00007fd28dfa76cd g_async_queue_timeout_pop (libglib-2.0.so.0 + 0xa6cd)
                #4  0x00007fd28e01ca50 g_thread_pool_thread_proxy (libglib-2.0.so.0 + 0x7fa50)
                #5  0x00007fd28e01ad12 g_thread_proxy (libglib-2.0.so.0 + 0x7dd12)
                #6  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #7  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65904:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285e9b877 n/a (libxul.so + 0x509b877)
                #2  0x00007fd285ea5a68 n/a (libxul.so + 0x50a5a68)
                #3  0x00007fd285ea4bb8 n/a (libxul.so + 0x50a4bb8)
                #4  0x00007fd286d4c35c n/a (libxul.so + 0x5f4c35c)
                #5  0x00007fd2872c6785 n/a (libxul.so + 0x64c6785)
                #6  0x00007fd2878c83df n/a (libxul.so + 0x6ac83df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65837:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd28532f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fd28532e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65842:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c72a7 n/a (libxul.so + 0x64c72a7)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65802:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c728e n/a (libxul.so + 0x64c728e)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65815:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd28532f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fd28532e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65798:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd28532f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fd28532e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65821:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd285339e59 n/a (libxul.so + 0x4539e59)
                #6  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 66221:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd28532f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fd28532e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65816:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd285339e59 n/a (libxul.so + 0x4539e59)
                #6  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65820:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd285339e59 n/a (libxul.so + 0x4539e59)
                #6  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65784:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd28e0154eb g_cond_wait (libglib-2.0.so.0 + 0x784eb)
                #2  0x00007fd28dfa758c g_async_queue_pop_intern_unlocked (libglib-2.0.so.0 + 0xa58c)
                #3  0x00007fd28e01bd64 g_thread_pool_spawn_thread (libglib-2.0.so.0 + 0x7ed64)
                #4  0x00007fd28e01ad12 g_thread_proxy (libglib-2.0.so.0 + 0x7dd12)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65817:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd285339e59 n/a (libxul.so + 0x4539e59)
                #6  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65785:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132674 __syscall_cancel (libc.so.6 + 0x6f674)
                #3  0x00007fd2981ac4a6 ppoll (libc.so.6 + 0xe94a6)
                #4  0x00007fd28dfe5125 g_main_context_iterate_unlocked.isra.0 (libglib-2.0.so.0 + 0x48125)
                #5  0x00007fd28dfe51e3 g_main_context_iteration (libglib-2.0.so.0 + 0x481e3)
                #6  0x00007fd28dfe5231 glib_worker_main (libglib-2.0.so.0 + 0x48231)
                #7  0x00007fd28e01ad12 g_thread_proxy (libglib-2.0.so.0 + 0x7dd12)
                #8  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #9  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65823:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd285339e59 n/a (libxul.so + 0x4539e59)
                #6  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65819:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd285339e59 n/a (libxul.so + 0x4539e59)
                #6  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65845:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c72a7 n/a (libxul.so + 0x64c72a7)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65783:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132674 __syscall_cancel (libc.so.6 + 0x6f674)
                #3  0x00007fd2981ac4de read (libc.so.6 + 0xe94de)
                #4  0x00007fd286b4249a n/a (libxul.so + 0x5d4249a)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65836:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981353e2 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x723e2)
                #4  0x00007fd285f66deb n/a (libxul.so + 0x5166deb)
                #5  0x00007fd285f672ed n/a (libxul.so + 0x51672ed)
                #6  0x00007fd286b4326a n/a (libxul.so + 0x5d4326a)
                #7  0x00007fd286b430e7 n/a (libxul.so + 0x5d430e7)
                #8  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #9  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65804:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c728e n/a (libxul.so + 0x64c728e)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65863:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132674 __syscall_cancel (libc.so.6 + 0x6f674)
                #3  0x00007fd2981a224f wait4 (libc.so.6 + 0xdf24f)
                #4  0x00007fd28ce7237b _ZN3std3sys7process4unix4unix7Process4wait17hbd50812eadeb112cE (libglycin-2.so.0 + 0x27237b)
                #5  0x00007fd28cc68caa _ZN3std3sys9backtrace28__rust_begin_short_backtrace17h064ba31310bc8171E (libglycin-2.so.0 + 0x68caa)
                #6  0x00007fd28cc717a7 _ZN4core3ops8function6FnOnce40call_once$u7b$$u7b$vtable.shim$u7d$$u7d$17h25726c849591671cE (libglycin-2.so.0 + 0x717a7)
                #7  0x00007fd28ce6c790 _ZN3std3sys6thread4unix6Thread3new12thread_start17h8f9ee33964587fb3E (libglycin-2.so.0 + 0x26c790)
                #8  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #9  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65790:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132674 __syscall_cancel (libc.so.6 + 0x6f674)
                #3  0x00007fd2981ac4a6 ppoll (libc.so.6 + 0xe94a6)
                #4  0x00007fd28dfe5125 g_main_context_iterate_unlocked.isra.0 (libglib-2.0.so.0 + 0x48125)
                #5  0x00007fd28dfe52e7 g_main_loop_run (libglib-2.0.so.0 + 0x482e7)
                #6  0x00007fd28de456c2 gdbus_shared_thread_func.lto_priv.0 (libgio-2.0.so.0 + 0xf76c2)
                #7  0x00007fd28e01ad12 g_thread_proxy (libglib-2.0.so.0 + 0x7dd12)
                #8  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #9  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65903:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285e9b877 n/a (libxul.so + 0x509b877)
                #2  0x00007fd285ea5a68 n/a (libxul.so + 0x50a5a68)
                #3  0x00007fd285ea4bb8 n/a (libxul.so + 0x50a4bb8)
                #4  0x00007fd286d4cd78 n/a (libxul.so + 0x5f4cd78)
                #5  0x00007fd28725b5cc n/a (libxul.so + 0x645b5cc)
                #6  0x00007fd2872c6655 n/a (libxul.so + 0x64c6655)
                #7  0x00007fd2878c83df n/a (libxul.so + 0x6ac83df)
                #8  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #9  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65827:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd28532f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fd28532e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65851:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd28532f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fd28532e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65794:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285341b57 n/a (libxul.so + 0x4541b57)
                #2  0x00007fd2853407c7 n/a (libxul.so + 0x45407c7)
                #3  0x00007fd286b4326a n/a (libxul.so + 0x5d4326a)
                #4  0x00007fd286b430e7 n/a (libxul.so + 0x5d430e7)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65841:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c72a7 n/a (libxul.so + 0x64c72a7)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65795:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981353e2 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x723e2)
                #4  0x00005588944af83f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                #5  0x00007fd28528f5e3 n/a (libxul.so + 0x448f5e3)
                #6  0x00007fd2853304c6 n/a (libxul.so + 0x45304c6)
                #7  0x00007fd28532e990 n/a (libxul.so + 0x452e990)
                #8  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #9  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #10 0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #11 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 66310:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd28532f6bb n/a (libxul.so + 0x452f6bb)
                #6  0x00007fd28532e97b n/a (libxul.so + 0x452e97b)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 66243:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132674 __syscall_cancel (libc.so.6 + 0x6f674)
                #3  0x00007fd2981bb291 recvmsg (libc.so.6 + 0xf8291)
                #4  0x00007fd28753666d n/a (libxul.so + 0x673666d)
                #5  0x00007fd286b430e7 n/a (libxul.so + 0x5d430e7)
                #6  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #7  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65844:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c72a7 n/a (libxul.so + 0x64c72a7)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65818:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132977 __GI___futex_abstimed_wait_cancelable64 (libc.so.6 + 0x6f977)
                #3  0x00007fd2981351cc pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x721cc)
                #4  0x00005588944af706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                #5  0x00007fd285339e59 n/a (libxul.so + 0x4539e59)
                #6  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #7  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #8  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65856:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd28cde4335 _ZN7parking5Inner4park17hba9f53276174d680E (libglycin-2.so.0 + 0x1e4335)
                #2  0x00007fd28cd30da9 _ZN21async_global_executor9threading16thread_main_loop17h3a5eb0faf55fb784E (libglycin-2.so.0 + 0x130da9)
                #3  0x00007fd28cd2f399 _ZN3std3sys9backtrace28__rust_begin_short_backtrace17h7572d54a22a7bb83E (libglycin-2.so.0 + 0x12f399)
                #4  0x00007fd28cd2f2a1 _ZN4core3ops8function6FnOnce40call_once$u7b$$u7b$vtable.shim$u7d$$u7d$17h7a62a7a6301b080aE (libglycin-2.so.0 + 0x12f2a1)
                #5  0x00007fd28ce6c790 _ZN3std3sys6thread4unix6Thread3new12thread_start17h8f9ee33964587fb3E (libglycin-2.so.0 + 0x26c790)
                #6  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #7  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65838:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c72a7 n/a (libxul.so + 0x64c72a7)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65796:
                #0  0x00007fd29813e412 __syscall_cancel_arch (libc.so.6 + 0x7b412)
                #1  0x00007fd29813262c __internal_syscall_cancel (libc.so.6 + 0x6f62c)
                #2  0x00007fd298132674 __syscall_cancel (libc.so.6 + 0x6f674)
                #3  0x00007fd2981abe7e __poll (libc.so.6 + 0xe8e7e)
                #4  0x00007fd28750e19d n/a (libxul.so + 0x670e19d)
                #5  0x00007fd2853304c6 n/a (libxul.so + 0x45304c6)
                #6  0x00007fd28532e990 n/a (libxul.so + 0x452e990)
                #7  0x00007fd286b45920 n/a (libxul.so + 0x5d45920)
                #8  0x00007fd2980a37df n/a (libnspr4.so + 0x217df)
                #9  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #10 0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65805:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd285ea9685 n/a (libxul.so + 0x50a9685)
                #2  0x00007fd285ea75a1 n/a (libxul.so + 0x50a75a1)
                #3  0x00007fd2872c7426 n/a (libxul.so + 0x64c7426)
                #4  0x00007fd2872c728e n/a (libxul.so + 0x64c728e)
                #5  0x00007fd298135d19 start_thread (libc.so.6 + 0x72d19)
                #6  0x00007fd2981b964c __clone3 (libc.so.6 + 0xf664c)
                
                Stack trace of thread 65932:
                #0  0x00007fd2981b73fd syscall (libc.so.6 + 0xf43fd)
                #1  0x00007fd28737ccf9 n/a (libxul.so + 0x657ccf9)
                #2  0x4000000000000000 n/a (n/a + 0x0)
                ELF object binary architecture: AMD x86-64

[berkaykrc]

Hello, I am just popping in to say I have a very similar issue. I am on fedora 44 with rtx 3080, driver version: 595.80. Wayland Zen version: 1.20.2b (64-bit).

Those are my envirement virables in /home/ja1/.bash_profile : export LIBVA_DRIVER_NAME=nvidia export NVD_BACKEND=direct export MOZ_DISABLE_RDD_SANDBOX=1 export CUDA_DISABLE_PERF_BOOST=1

Setting media.hardware-video-decoding.force-enabled to true causes the zen browser to crash when youtube is attempting to play a video, no system freeze though. I have checked on stock firefox and it works fine. The command: nvidia-smi dmon -s u shows decoding to be used when playing a video on firefox, so I assume that it is actually working. Hardware decoding functional on firefox, but with the same settings crashing on zen suggests that it is a zen issue.
The crash output

Thank you for contributing. At least we know that new drivers will not solve the problem, so I don't need to install them.

[Hilaeh]

I have made some more digging.
First, I have installed my zen browser using the file from zen browser download page. So no flatpack.

I have noticed 2 differences between working firefox, and not working zen:
both DMABUF and CANVAS_RENDERER_THREAD are listed as available in firefox and in zen:

DMABUF	env	blocklisted	Blocklisted by gfxInfo	Blocklisted; failure code FEATURE_FAILURE_DL_BLOCKLIST_NO_ID
CANVAS_RENDERER_THREAD	default	blocked	Thread unsafe GL	Blocklisted; failure code FEATURE_FAILURE_THREAD_UNSAFE_GL

The output of: journalctl -f | grep -i "wayland|zen|GFX1"

When trying to play a youtube video:

with user_pref("widget.dmabuf.force-enabled", true);

Details

Jun 09 15:55:55 fedora rtkit-daemon[990]: Successfully made thread 117547 of process 117392 (/home/ja1/Programs/zen-browser/zen) owned by '1000' RT at priority 10.
Jun 09 15:56:05 fedora zen[117514]: libva info: VA-API version 1.23.0
Jun 09 15:56:05 fedora zen[117514]: libva info: User environment variable requested driver 'nvidia'
Jun 09 15:56:05 fedora zen[117514]: libva info: Trying to open /usr/lib64/dri-nonfree/nvidia_drv_video.so
Jun 09 15:56:05 fedora zen[117514]: libva info: Trying to open /usr/lib64/dri-freeworld/nvidia_drv_video.so
Jun 09 15:56:05 fedora zen[117514]: libva info: Trying to open /usr/lib64/dri/nvidia_drv_video.so
Jun 09 15:56:05 fedora zen[117514]: libva info: Found init function __vaDriverInit_1_0
Jun 09 15:56:05 fedora zen[117514]: libva info: va_openDriver() returns 0
Jun 09 15:56:07 fedora rtkit-daemon[990]: Successfully made thread 118153 of process 118030 (/home/ja1/Programs/zen-browser/zen) owned by '1000' RT at priority 10.
Jun 09 15:56:07 fedora kwin_wayland[1784]: failed to import dmabuf KWin::LinuxDmaBufV1ClientBuffer(0x55a34fbce9a0)
Jun 09 15:56:07 fedora audit[117392]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=117392 comm="zen" exe="/home/ja1/Programs/zen-browser/zen" sig=11 res=1
Jun 09 15:56:07 fedora kwin_wayland_wrapper[1784]: error in client communication (pid 117392)
Jun 09 15:56:07 fedora zen[117392]: Crash Annotation GraphicsCriticalError: |[0][GFX1-]: (kde) Wayland protocol error: zwp_linux_buffer_params_v1#215: error 7: importing the supplied dmabufs failed
Jun 09 15:56:07 fedora zen[117392]:  (t=14.7437) [GFX1-]: (kde) Wayland protocol error: zwp_linux_buffer_params_v1#215: error 7: importing the supplied dmabufs failed
Jun 09 15:56:07 fedora systemd-coredump[118165]: Process 117392 (zen) of user 1000 terminated abnormally with signal 11/SEGV, processing...
Jun 09 15:56:10 fedora systemd-coredump[118166]: Process 117392 (zen) of user 1000 dumped core.
                                                 Module libwayland-server.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 Module libnvidia-egl-wayland.so.1 from rpm egl-wayland-1.1.21-2.fc44.x86_64
                                                 Module libnvidia-egl-wayland2.so.1 from rpm egl-wayland2-1.0.1-1.fc44.x86_64
                                                 Module libwayland-egl.so.1 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 Module libwayland-cursor.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 Module libwayland-client.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 #5  0x00007fc3a18b6f7e wl_log (libwayland-client.so.0 + 0xf7e)
                                                 #6  0x00007fc3a18b72fe display_handle_error (libwayland-client.so.0 + 0x12fe)
                                                 #10 0x00007fc3a18b7f6b wl_closure_invoke.constprop.0 (libwayland-client.so.0 + 0x1f6b)
                                                 #11 0x00007fc3a18b8e19 dispatch_event (libwayland-client.so.0 + 0x2e19)
                                                 #12 0x00007fc3a18b9207 wl_display_dispatch_queue_pending (libwayland-client.so.0 + 0x3207)
                                                 #13 0x00007fc397c64e20 _gdk_wayland_display_queue_events (libgdk-3.so.0 + 0x46e20)
                                                 #27 0x000055df4cc3b3d7 n/a (zen + 0x703d7)
                                                 #30 0x000055df4cc5139b _start (zen + 0x8639b)
                                                 #4  0x000055df4cc8d706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x000055df4cc8d706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
Jun 09 15:56:10 fedora zen[118030]: Exiting due to channel error.
Jun 09 15:56:10 fedora zen[118070]: Exiting due to channel error.
Jun 09 15:56:10 fedora zen[117972]: Exiting due to channel error.
Jun 09 15:56:10 fedora zen[117720]: Exiting due to channel error.
Jun 09 15:56:10 fedora zen[117923]: Exiting due to channel error.
Jun 09 15:56:10 fedora zen[117859]: Exiting due to channel error.
Jun 09 15:56:10 fedora zen[117505]: Exiting due to channel error.
Jun 09 15:56:10 fedora systemd[1527]: app-zen@67953ceb36d44701b009b764ad3024de.service: Main process exited, code=dumped, status=11/SEGV
Jun 09 15:56:10 fedora abrt-server[118183]: Executable '/home/ja1/Programs/zen-browser/zen' doesn't belong to any package and ProcessUnpackaged is set to 'no'
Jun 09 15:56:10 fedora systemd[1527]: app-zen@67953ceb36d44701b009b764ad3024de.service: Failed with result 'core-dump'.
Jun 09 15:56:10 fedora systemd[1527]: app-zen@67953ceb36d44701b009b764ad3024de.service: Consumed 18.620s CPU time over 17.747s wall clock time, 1.1G memory peak.

and without user_pref("widget.dmabuf.force-enabled", true);

Details

Jun 09 15:48:59 fedora rtkit-daemon[990]: Successfully made thread 116637 of process 116489 (/home/ja1/Programs/zen-browser/zen) owned by '1000' RT at priority 10.
Jun 09 15:49:11 fedora zen[116604]: libva info: VA-API version 1.23.0
Jun 09 15:49:11 fedora zen[116604]: libva info: User environment variable requested driver 'nvidia'
Jun 09 15:49:11 fedora zen[116604]: libva info: Trying to open /usr/lib64/dri-nonfree/nvidia_drv_video.so
Jun 09 15:49:11 fedora zen[116604]: libva info: Trying to open /usr/lib64/dri-freeworld/nvidia_drv_video.so
Jun 09 15:49:11 fedora zen[116604]: libva info: Trying to open /usr/lib64/dri/nvidia_drv_video.so
Jun 09 15:49:11 fedora zen[116604]: libva info: Found init function __vaDriverInit_1_0
Jun 09 15:49:11 fedora zen[116604]: libva info: va_openDriver() returns 0
Jun 09 15:49:12 fedora rtkit-daemon[990]: Successfully made thread 117230 of process 117104 (/home/ja1/Programs/zen-browser/zen) owned by '1000' RT at priority 10.
Jun 09 15:49:13 fedora audit[116489]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=116489 comm="Compositor" exe="/home/ja1/Programs/zen-browser/zen" sig=11 res=1
Jun 09 15:49:13 fedora systemd-coredump[117253]: Process 116489 (zen) of user 1000 terminated abnormally with signal 11/SEGV, processing...
Jun 09 15:49:15 fedora systemd-coredump[117254]: Process 116489 (zen) of user 1000 dumped core.
                                                 Module libwayland-server.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 Module libnvidia-egl-wayland.so.1 from rpm egl-wayland-1.1.21-2.fc44.x86_64
                                                 Module libnvidia-egl-wayland2.so.1 from rpm egl-wayland2-1.0.1-1.fc44.x86_64
                                                 Module libwayland-egl.so.1 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 Module libwayland-cursor.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 Module libwayland-client.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #15 0x00005620e0eb33d7 n/a (zen + 0x703d7)
                                                 #18 0x00005620e0ec939b _start (zen + 0x8639b)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f05706 _ZN7mozilla6detail21ConditionVariableImpl4waitERNS0_9MutexImplE (zen + 0xc2706)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
                                                 #4  0x00005620e0f0583f _ZN7mozilla6detail21ConditionVariableImpl8wait_forERNS0_9MutexImplERKNS_16BaseTimeDurationINS_27TimeDurationValueCalculatorEEE (zen + 0xc283f)
Jun 09 15:49:15 fedora zen[117160]: Exiting due to channel error.
Jun 09 15:49:15 fedora zen[117104]: Exiting due to channel error.
Jun 09 15:49:15 fedora zen[117009]: Exiting due to channel error.
Jun 09 15:49:15 fedora zen[117046]: Exiting due to channel error.
Jun 09 15:49:15 fedora zen[117104]: [Child 117104, MediaDecoderStateMachine #1] WARNING: 7fc4058daca0 OpenCubeb() failed to init cubeb: file ./../../../dom/media/Au
Jun 09 15:49:15 fedora zen[116804]: Exiting due to channel error.
Jun 09 15:49:15 fedora zen[116944]: Exiting due to channel error.
Jun 09 15:49:15 fedora zen[116595]: Exiting due to channel error.
Jun 09 15:49:15 fedora systemd[1527]: app-zen@2d200ce1c45c4ef890c13289db1696ac.service: Main process exited, code=dumped, status=11/SEGV
Jun 09 15:49:15 fedora abrt-server[117267]: Executable '/home/ja1/Programs/zen-browser/zen' doesn't belong to any package and ProcessUnpackaged is set to 'no'
Jun 09 15:49:16 fedora systemd[1527]: app-zen@2d200ce1c45c4ef890c13289db1696ac.service: Failed with result 'core-dump'.
Jun 09 15:49:16 fedora systemd[1527]: app-zen@2d200ce1c45c4ef890c13289db1696ac.service: Consumed 14.632s CPU time over 17.921s wall clock time, 1G memory peak.

Similar errors also apper when trying to open https://zen-browser.app/

[Propheticus]

Hardware decoding functional on firefox, but with the same settings crashing on zen suggests that it is a zen issue.

Yes, if configs are identical you could conclude that.

It can also be an indication that the Nvidia drivers have fixes or workarounds it applies to Firefox that it doesn't to Zen because it doesn't know/recognise Zen as a browser that needs the Firefox fixes.

I also wonder if it's a coincidence you're all on Fedora?

I have noticed 2 differences between working firefox, and not working zen: both DMABUF and CANVAS_RENDERER_THREAD are listed as available in firefox and in zen:

DMABUF env blocklisted Blocklisted by gfxInfo Blocklisted; failure code FEATURE_FAILURE_DL_BLOCKLIST_NO_ID
CANVAS_RENDERER_THREAD default blocked Thread unsafe GL Blocklisted; failure code FEATURE_FAILURE_THREAD_UNSAFE_GL

Strange:

(Tarball installed on Linux 7.0.11-1 CachyOS - KDE Plasma - Kwin Wayland
GPU is AMD though)

[Propheticus]

with user_pref("widget.dmabuf.force-enabled", true);

[NVIDIA] Crash in [@ failed to import supplied dmabufs ]

Just to eliminate things:
Also are you guys (m/v) running the full ffmpeg or just the (Fedora default) ffmpeg-free?

I'm not sure what codecs/libs Firefox includes in their RPM, but we reached a conclusion before that a ffmpeg (4.4 at the time) dependency was needed. #10555

[berkaykrc]

with user_pref("widget.dmabuf.force-enabled", true);

[NVIDIA] Crash in [@ failed to import supplied dmabufs ]

Just to eliminate things: Also are you guys (m/v) running the full ffmpeg or just the (Fedora default) ffmpeg-free?

I'm not sure what codecs/libs Firefox includes in their RPM, but we reached a conclusion before that a ffmpeg (4.4 at the time) dependency was needed. #10555

dnf list ffmpeg
Updating and loading repositories:
 Fedora 43 - x86_64 - Updates                                                                                                                        100% |  16.9 KiB/s |  15.9 KiB |  00m01s
Repositories loaded.
Installed packages
ffmpeg.x86_64 7.1.4-1.fc43 <unknown>

full i guess?

[Hilaeh]

I have experimented with setting the profile to a new clean one and found out that, at least for me, the issue laid with user.js file. Without it, it worked. Both on a completely new profile and the old one, just without this specific file, or with a new one with the same contents.

When I deleted the entire insides of the profile directory and launched the browser, the clean profile had the hardware decoding working properly.

When I replaced the new profile with the old one, with the user.js file, the first launch loaded everything properly and decoding worked as well. But then after restart, it crashed.

When I restarted the profile again and placed all the files from the old profile aside from user.js, it worked.
The loaded old profile still had the settings from user.js remembered and set, yet it did not crash.

After adding the old file it started crashing again.

At the end I created a completely new user.js and pasted the contents of the old one into it.
After launch, it did not crash.

I have no idea what is going on. Is the old file smelly or something?

Anyway, I should have done this much sooner, I apologize for the introduced confusion.
I do not know if my fix applies to the original issue poster.

[berkaykrc]

Hardware Decoding is always working for me that's not the issue. The issue is when hardware decoding happens with vaapi it crashes. It did happen to me on Chromium too but not on Firefox. As I said I tried new install Zen, Firefox from dnf and Chromium only Firefox is surviving. Additionally, on Firefox I do not set widget.dmabuf.force-enabled to true and it doesn't crash on videoplay.