All reports here and in bug 1178474 are against Intel. (In reply to Stefan Dirsch from comment #1) > Thanks. This sounds like a kernel regression. Since kernel 5.9 or already In the other bug, it works with 5.8. > 5.8. I suggest to set > > drm.debug=0xe > > as kernel boot parameter and then run 'dmesg' command after this issue > happened, so we may see the culprit.