https://bugs.freedesktop.org/show_bug.cgi?id=93649
--- Comment #41 from hofmann.zachary@gmail.com --- (In reply to Amarildo from comment #40)
If disabling DPM fixed the issue, shouldn't developers study it's code a little bit? I'm 99.99% positive the issue is in there somewhere, even for AMDGPU (since RadeonSI and AMDGPU drivers share a lot of code).
Another user previously stated in the thread that they were experiencing the issues and had DPM disabled.
@Marek Olšák Please let me know if there's anything I can do to help hunt this bug down.