fail to boot (black screen) even with intel iGPU?

[tpchuckles]

lspci yields:

suggesting i do indeed have an intel iGPU. This is a 2020 intel macbook pro, running t2-ubuntu, but I am faced with the same black screen on boot as mentioned in other issues. odd, since i do seem to have an intel iGPU.

are there other prerequisites? some other configuration i'm missing? and what logs i should be checking so we can diagnose this?