the display stopped updating as soon as amdgpu took over, and it never came back. The firmware is needed of course, and as a side note, it could be nice if the kernel could fail more gracefully, somehow bringing the display back (it works fine with amdgpu blacklisted, just no acceleration) such that it takes me less than two days to figure it all out.this is a linux bug, you might want to submit it upstream to AMD guys.
Yea, I actually wasn't sure if this would be regarded as such, thanks for the encouragement. I'll look that up.
I sure hope it would also end up in some point release? Or maybe a freeze exception could be made?The relevant files are amdgpu/green_sardine_*right, they only got pushed upstream in linux-firmware git on 11/2/2021 after the latest 20210208 release, hence unfortunately they miss out the next debian release https://release.debian.org/bullseye/freeze_policy.html They will land in the next upstream release upload of 202103XX to experimental, backports and then after bullseye release to unstable (plus next testing).
It would be unfortunate if a new computer won't be usable
(without backports) on stable Debian which is to be finally
released presumably several months after the computer hit the
market, for want of a rather minor fix.