https://bugs.freedesktop.org/show_bug.cgi?id=110886
--- Comment #4 from Kai-Heng Feng kai.heng.feng@canonical.com --- (In reply to Alex Deucher from comment #3)
Is this a regression? If so, can you bisect?
No this is not a regression.
This issue (S3 resume fail) also happens on previous kernel versions, but without any stack trace logged. On amd-staging-drm-next we can observe the same issue and a stacktrace.