(In reply to Adam Reichold from comment #27) > At this point, I suspect something SUSE specific being the root cause here: > While downgrading the firmware package did help and upgrading to > kernel-firmware-20201005-337.1.noarch.rpm from > https://build.opensuse.org/package/show/home:tiwai:branches:Kernel:HEAD/ > kernel-firmware did also work, just using the plain upstream amdgpu folder > from > https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git > and dumping it into /lib/firmware/updates works as well. (I used > firmware_class.dyndbg=+p to check that the update files I fetched directly > via Git are loaded). I am sorry for spamming this bug report, really. But this is getting weirder still: I have no revert to a clean Tumbleweed 20201011-722.1 and everything still works. So booting into the old firmware once seems to restore the system until something unknown happens that breaks the new firmware?!