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PoC: profiles/nvidia: Eliminate early KMS usage in favor of proper systemd chainload #236

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PoC: profiles/nvidia: Eliminate early KMS usage in favor of proper systemd chainload #236

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profiles/nvidia: Eliminate early KMS usage in favor of proper systemd…
ventureoo Mar 28, 2026
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profiles/amd: Eliminate early KMS usage in favor of proper systemd ch…
ventureoo Mar 30, 2026
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79 changes: 77 additions & 2 deletions profiles/pci/graphic_drivers/profiles.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -48,9 +48,36 @@ conditional_packages = """

"""
pre_install = """
cat <<EOF >/etc/mkinitcpio.conf.d/10-chwd.conf
cat << 'EOF' | install -Dm644 /dev/stdin /etc/udev/rules.d/30-chwd-nvidia.rules
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
MODULES+=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)
ACTION=="add", SUBSYSTEM=="module", KERNEL=="nvidia_drm", TAG+="systemd", ENV{SYSTEMD_WANTS}+="nvidia-module-load.target"
EOF

cat << 'EOF' | install -Dm644 /dev/stdin /etc/systemd/system/nvidia-module-load.target
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
[Unit]
Description=NVIDIA module load target
Documentation=man:systemd.special(7)
JobTimeoutSec=10s

# Make this a synchronization point on NVIDIA module load
After=sys-module-nvidia_drm.device
Wants=sys-module-nvidia_drm.device
EOF

mkdir -p /etc/systemd/system/getty@.service.d /etc/systemd/system/display-manager.service.d
cat << 'EOF' | install -Dm644 /dev/stdin /etc/systemd/system/getty@.service.d/30-chwd-nvidia.conf
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
[Unit]
Wants=nvidia-module-load.target
After=nvidia-module-load.target
EOF

cat << 'EOF' | install -Dm644 /dev/stdin /etc/systemd/system/display-manager.service.d/30-chwd-nvidia.conf
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
[Unit]
Wants=nvidia-module-load.target
After=nvidia-module-load.target
EOF

# Remove kms hook from mkinitcpio.conf on desktops
Expand Down Expand Up @@ -92,6 +119,10 @@ EOF
pre_remove = """
rm -f /etc/mkinitcpio.conf.d/10-chwd.conf
rm -f /etc/mkinitcpio.conf.d/10-chwd-kms.conf
rm -f /etc/udev/rules.d/30-chwd-nvidia.rules
rm -f /etc/systemd/system/getty@.service.d/30-chwd-nvidia.conf
rm -f /etc/systemd/system/display-manager.service.d/30-chwd-nvidia.conf
rm -f /etc/systemd/system/nvidia-module-load.target
"""
post_remove = """
rm -f /etc/profile.d/nvidia-rtd3-workaround.sh
Expand Down Expand Up @@ -313,6 +344,50 @@ if [ -z "$(lspci -d "10de:*:030x")" ]; then
echo "opencl-mesa lib32-opencl-mesa"
fi
"""
pre_install = """
cat << 'EOF' | install -Dm644 /dev/stdin /etc/udev/rules.d/30-chwd-amdgpu.rules
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
ACTION=="add", SUBSYSTEM=="module", KERNEL=="amdgpu", TAG+="systemd", ENV{SYSTEMD_WANTS}+="amdgpu-module-load.target"
EOF

cat << 'EOF' | install -Dm644 /dev/stdin /etc/systemd/system/amdgpu-module-load.target
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
[Unit]
Description=amdgpu module load target
Documentation=man:systemd.special(7)
JobTimeoutSec=10s

# Make this a synchronization point on amdgpu module load
After=sys-module-amdgpu.device
Wants=sys-module-amdgpu.device
EOF

mkdir -p /etc/systemd/system/getty@.service.d /etc/systemd/system/display-manager.service.d
cat << 'EOF' | install -Dm644 /dev/stdin /etc/systemd/system/getty@.service.d/30-chwd-amdgpu.conf
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
[Unit]
Wants=amdgpu-module-load.target
After=amdgpu-module-load.target
EOF

cat << 'EOF' | install -Dm644 /dev/stdin /etc/systemd/system/display-manager.service.d/30-chwd-amdgpu.conf
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
[Unit]
Wants=amdgpu-module-load.target
After=amdgpu-module-load.target
EOF

cat <<'EOF' >/etc/mkinitcpio.conf.d/10-chwd-amdgpu-kms.conf
# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
HOOKS=(${HOOKS[@]/kms/})
EOF
"""
pre_remove = """
rm -f /etc/udev/rules.d/30-chwd-amdgpu.rules
rm -f /etc/systemd/system/getty@.service.d/30-chwd-amdgpu.conf
rm -f /etc/systemd/system/display-manager.service.d/30-chwd-amdgpu.conf
rm -f /etc/systemd/system/amdgpu-module-load.target
"""

[fallback]
desc = 'Fallback profile'
Expand Down
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