https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #4 from mikhail.v.gavrilov@gmail.com --- (In reply to Harry Wentland from comment #3)
Created attachment 140594 [details] [review] [PATCH] drm/amd/display: Convert 10kHz clks from PPLib into kHz for Vega
Don't think the other patch would apply to 4.18 but this one should. There's been a bunch of work on the powerplay/DC interface, so this looks different for 4.18 and amd-stg.
I can confirm that this patch fix the issue.
But I did not like one thing: I decided to check how work VEGA GPU through HDMI and connected the second monitor via HDMI.
The first that I did not like was that on the first monitor which was connected via DisplayPort, the scaling setting was reset from 200% to 100%.
The second that I did not like was that when I tried to set the scaling at 200% through gnome-settings, my computer was hung. I even could not connect through ssh to look at the kernel log.
I tried to repeat this case but unsuccessfully, but unpleasant residue still remained.