Created attachment 126306 [details]
Hi, I am using an MSI R7 260x OC with the new amdgpu driver. Everything seems to run fine (I have yet to experience any crashes), however there constantly flicker some artifacts on my screen.
In the Xorg.0.log I have noticed many suspicious error messages similar to this:
AMDGPU(0): amdgpu_dri2_flip_event_handler: Pageflip completion event has impossible msc 100169 < target_msc 100170
Looking at the description in the source code, it fits the bug I experience:
> Check for too small vblank count of pageflip completion, taking wraparound
> into account. This usually means some defective kms pageflip completion,
> causing wrong (msc, ust) return values and possible visual corruption.
I saw there was a similar bug (bug#91540), but it has been marked as fixed some time ago.
Linux v4.7.2 (amdgpu, cik and powerplay enabled)
KDE Plasma 5 (kwin)
If you need any further info please ask.
Forgot one info:
xf86-video-amdgpu v1.1.0 (glamor)
Please attach the corresponding dmesg output.
Created attachment 126362 [details]
Any ideas? This is extremely annoying :/
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-4.9&id=325cbba19a32b172300fc87cd4da7c45c4f9e0ba (and the changes before / after that one) may help for this.
Thanks. In which version will this commit be included?
Ah I see, Linux v4.9 right?
Thanks, would you be so kind and compose me a patch with all commits that I need and that I can apply on top of the kernel v4.8 sources (which I am currently using)? So that I can test if the issue is fixed.
Can you just try the drm-next-4.9 tree? It's based on 4.8-rc8, so should be pretty stable in general.
Alternatively, you can generate a diff between 4.8-rc8 and current drm-next-4.9 with
git diff v4.8-rc8..8036617e92e3fad49eef9bbe868b661c58249aff
and apply that to 4.8.
Is this still happening with current drivers?
Hi, I don't know I have since switched my graphics card long ago
Thanks for the follow-up. Resolving as WONTFIX, since we can't know if it's fixed.