Aha! Yes indeed the offending commit first appeared in amdgpu_dm.c in
5.4.0-66, so reverting to 5.4.0-65 should work around the problem.
** Summary changed:
- [amdgpu] Screen fails to wake up after sleep
+ [amdgpu] Screen fails to wake up after sleep using 5.4.0-66, but 5.4.0-65
works
** Tags added: regression-update
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Changed in: linux-meta-hwe-5.8 (Ubuntu)
Status: Incomplete => Confirmed
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux-meta-hwe-5.8 (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
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https://bugs.launchpad.net/bugs/1916950
Title:
[amdgpu] Screen fails to wake up after sleep using 5.4.0-66, but
5.4.0-65 works
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