As suggested by @LinuxUser, I followed the instructions in this Ask Ubuntu Answer. It points to a linux-firmware update. And indeed version 1.190’s changelog has:
- amdgpu: update navi10 firmware for 20.30
- amdgpu: update navi14 firmware for 20.30
- amdgpu: update picasso firmware for 20.30
- amdgpu: update raven firmware for 20.30
- amdgpu: update raven2 firmware for 20.30
- amdgpu: update renoir firmware for 20.30
- amdgpu: update vega10 firmware for 20.30
- amdgpu: update vega12 firmware for 20.30
- amdgpu: update vega20 firmware for 20.30
As far as I can tell, Picasso is the code name for the processor family my CPU is part of, and although I couldn’t find vega 8 in the list above, I figured that it is worth a shot.
The package for Ubuntu 20.10, was installed cleanly on my 20.04 with HWE, and here are my results so far:
- When I set my render engine to OpenGL 3.1, I did get the original Gray screen, however
- on XRender, so far, I didn’t get any display glitches.
Will keep posting about any updates.