https://bugs.freedesktop.org/show_bug.cgi?id=110659

--- Comment #48 from Nicholas Kazlauskas nicholas.kazlauskas@amd.com --- (In reply to tempel.julian from comment #47)

I got a new 1440p 144 Hz FreeSync display, and as expected, the issue is unchanged with it.

With it, I've created a new debug dmesg log for render stutter in Oblivion, this time with your patch applied to drm-next kernel.

Perhaps this could be interesting?

[ 529.556752] [drm:drm_mode_addfb2 [drm]] [FB:79] [ 529.557106] [drm:amdgpu_dm_atomic_commit_tail [amdgpu]] VRR packet update: crtc=47 enabled=1 state=3 [ 529.557164] [drm:dc_commit_updates_for_stream [amdgpu]] debug: full update issued [ 529.564401] [drm:drm_mode_addfb2 [drm]] [FB:86] [ 531.420971] [drm:drm_mode_addfb2 [drm]] [FB:95] [ 531.459067] [drm:drm_mode_addfb2 [drm]] [FB:96] [ 544.144771] [drm:amdgpu_dm_atomic_commit_tail [amdgpu]] VRR packet update: crtc=47 enabled=0 state=2 [ 544.145961] [drm:dc_commit_updates_for_stream [amdgpu]] debug: full update issued [ 544.169447] [drm:drm_mode_addfb2 [drm]] [FB:79] [ 544.172953] [drm:drm_mode_addfb2 [drm]] [FB:94]

This is normal behavior for toggling into and out of VRR. I was expecting to see was a log with hundreds of full updates issued, but since this isn't the case I think it's something more fundamental with vblank timing though I'm still not quite sure why it I can't reproduce it in my testing.