https://bugs.freedesktop.org/show_bug.cgi?id=102646
--- Comment #105 from magist3r magist3r@gmail.com --- (In reply to reject5514 from comment #103)
I have this problem on Archlinux 5.2.8-arch1-1-ARCH when connected 2 monitors(1920x1080 @ 60Hz) and amdgpu.ppfeaturemask=0xffffffff option enabled. Patch didn't work for me.
My GPU is RX570.
Try this patch: https://lists.freedesktop.org/archives/amd-gfx/2019-June/036022.html