[Bug 103317] Tearing in WQHD, but not in FHD

https://bugs.freedesktop.org/show_bug.cgi?id=103317

--- Comment #4 from Michel Dänzer michel@daenzer.net --- (In reply to Torsten Kessler from comment #3)

As suggested I turned EnablePageFlip off:

[...]

But this doesn't avoid the problem.

Please attach the corresponding Xorg log file.

As before, everything works fine when I switch to FHD or radeonsi.

You cannot "switch to radeonsi", I assume you mean when you use the radeon kernel driver instead of amdgpu. The Mesa radeonsi driver is used in both cases.

You might want to try a kernel built from the amd-staging-drm-next branch of https://cgit.freedesktop.org/~agd5f/linux/ with CONFIG_DRM_AMD_DC=y at build time and amdgpu.dc=1 at runtime, to see if that works better.