zimci
Okay guys,
did some testing on the monitor Samsung SJ55W (Monitor 2) that has been giving me problems for 3 years until I switched to Intel ARC (Setup2) in December. I must say there was a noticeable difference when I just switched back to AMD Setup1 minutes ago.
The monitor settings and cabling are the same, but when I use this LCD inversion test there is a noticable flicker in AMD Setup1 on 4a and 5 pattern, especially at 60Hz and less pronounced at 75Hz, whereas Intel ARC Setup2 produces a clear picture both on 60Hz and 75Hz.
Maybe AMD driver was truly the problem all along and the VA panel is actually not faulty as I always thought. All in all I am coming on to something and might try buying an Intel card for testing other setups, too!
I tried some other tests as well, Samsung panel seems to fare the best in these, especially paired with Intel ARC. To repeat, I am using Linux on both mentioned setups (PopOS for Setup1 and Nobara for Setup2), no Windows test.