Created attachment 137926 [details] dmesg with errors and bt agd5f 4.17-wip with only with amdgpu.dc=1 I can hang display with Unreal tournament demo, backtrace at end of attached dmesg. The game notices and times out after 30sec and I regain display. This is just on initial menu possibly moving mouse to trigger - time taken to trigger 1 - 5 seconds. Other things seem OK, but there is also rare display glitch in normal use where it seems that a black frame is displayed or something. May be luck, and I've only seen it a few times, but was moving mouse at the time. No bisect, recent bugs seem to go away next update anyway + the last "DC team" bug I took time to bisect has been unanswered since December - though it may be very specific to my setup, unanswered = less motivation to bisect.
fixed in agd5f drm-next-4.17 I guess by Revert "drm/amd/display: disable CRTCs with NULL FB on their primary plane (V2)"
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.