Created attachment 144891 [details]
Since 5.2 kernel, my system (raven ridge 2400G, Asrock X470 Gaming-ITX/ac, latest bios, archlinux) crashes (black screen or green screen or flickereing screen at start). I identified the issue with my RAM's speed, which is shared between the GPU and CPU.
Everything above 2133Mhz crashes.
I dont have this issue with 5.1 kernel.
Dsmeg of the crash as attachment
Can you bisect?
(In reply to Alex Deucher from comment #1)
> Can you bisect?
I'm gonna try ^^, never did it before and leave to holydays Friday.
I'm gonna start with RC, then whith commits.
You think it's a proper way ?
Ok, back from holidays.
Just compiled 5.12 RC1 and it doesnt work, green screen.
Any idea which commit i should test ?
I have finished bisecting.
This is the commit which created the bug :
" Bissection : 0 révision à tester après ceci (à peu près 0 étape)
[005440066f929ba0dca8f4e0aebfbf8daac592cc] drm/amdgpu: enable gfxoff again on raven series (v2)"
What do i do next ?
Seems to be related to this bug:
Tried amd.iommu off but doesnt work, so it's something else.
Created attachment 145321 [details]
Tried this "amdgpu.ppfeaturemask=0xffff3fff" but iit doesnt work (from here: https://bugzilla.kernel.org/show_bug.cgi?id=204689).
Add new dmesg to check firmware version
And cant revert the commit with 5.3, i get git conflict...
I noticed IOMMU page fault in the log - is disabling iommu helps ? (from grub cmdline add iommu=off)
Tried with "iommu=offiommu=off amdgpu.ppfeaturemask=0xffff3fff", no change, green screen.
Any idea ?
Fixed with latest firmware
I reopened it, it wwas not fixes with latest firmware, my bad, it was my memory which was clocked at 2133MHz by the bios...
-- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/879.