TearFree works in general, scrolling in Firefox is free of tearing with it without compositor. But as soon as I enter fullscreen mode, it is broken afterwards. This is on Gemini Lake and recent xorg-server-git master, xf86-video-intel-git master Attaching dmesg.log and xorg.log. I reported a similar issue for xf86-video-amdgpu which got fixed: https://bugs.freedesktop.org/show_bug.cgi?id=109364
Created attachment 145512 [details] dmesg log
Created attachment 145513 [details] xorg log
I suggest bisecting Xorg...
Probably the fallout from commit 87491ced98705a14be2bb5a3ce7e41cb5ffc11d0 Author: Michel Dänzer <michel.daenzer@amd.com> Date: Mon Mar 25 12:32:48 2019 +0100 present/scmd: Check that the flip and screen pixmap pitches match
Thanks for your response. This commit already has been reverted in master/1.20 branch, it is not at fault in this case.
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