[Bug 1222156] radeon: After an upgrade the graphical interface no longer works
https://bugzilla.suse.com/show_bug.cgi?id=1222156 https://bugzilla.suse.com/show_bug.cgi?id=1222156#c26 --- Comment #26 from t neo <tneo@gmx.com> --- (In reply to Stefan Dirsch from comment #10)
Togan switches with his option to the newer amdgpu Kernel driver (which isn't default for his Radeon GPU). I doubt this changes also the Mesa driver. But seems this prevents the segfault.
@Robert I think you have a different Radeon GPU, so you can't easily switch to amdgpu driver or the support for it isn't working (there is a reason that default kernel driver is radeon and not amdgpu). So this doesn't help.
I suggest to either do a rollback or disable radeon kernel driver completely with adding
modprobe.blacklist=radeon
to GRUB_CMDLINE_LINUX_DEFAULT (see comment#7). With that you'll get simpledrm on top of generic framebuffer. Means no 2d/3d acceleration and no multimonitor support, but you should have a stable desktop back.
Adding modprobe.blacklist to the GRUB command makes my machine bootable in graphical target again. @Takashi the issues arose with the last complete rebuild image from Tumbleweed (VERSION="20270329"), due to XZ backdoor. It effects kernel 6.8.1-1-default. The last known kernel that I have to test with and works is 6.7.8.x -- You are receiving this mail because: You are on the CC list for the bug.
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