(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.