I can't see anything related to the problem in the log of comment #8.
Probably because that log is from the wrong session? I don't see any
evidence of suspend+resume there.
Please:
1. Reboot.
2. Suspend, resume, and reproduce the bug again.
3. Reboot again.
4. Run:
journalctl -b-1 > prevbootagain.txt
and attach the resulting text file here.
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: xserver-xorg-video-amdgpu (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-amdgpu in Ubuntu.
https://bugs.launchpad.net/bugs/1891684
Title:
[amdgpu] Screen flickers after resuming from suspend
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