https://bugs.freedesktop.org/show_bug.cgi?id=110217
--- Comment #3 from numzer0@yandex.ru --- New information:
1. Screen turns black at module insertion, be it during bootup or later. But resuming from hibernation works.
2. On the system, the converter I use is problematic itself. When I connect it to another PC, HDMI port is shown as “connected” *until* I connect a monitor to the converter. Then, everything works but HDMI port is displayed as “disconnected” in xrandr.
After updating the system, flicker seems to happen in X only, despite the “TearFree” option. Virtual consoles work well, albeit use the same mode (i.e. no mode change on VT switch). Not sure was that the case earlier.
Also, after last hibernation, the old trick with resetting mode didn’t help, flicker continues. New X instances flicker as well.
New kernel: Linux 5.1.2-arch1-1-ARCH New X driver: xf86-video-amdgpu 19.0.1-1