https://bugs.freedesktop.org/show_bug.cgi?id=110671
--- Comment #4 from Tomas Bzatek bugs@bzatek.net --- Created attachment 144252 --> https://bugs.freedesktop.org/attachment.cgi?id=144252&action=edit dmesg drm.debug=0x1e (kernel 4.20.0-zen-g742adf1bca12-dirty)
For the record, this is a custom 4.20.0 kernel that is proven realiable.
Basically agd5f drm-next-4.21 branch at 674e78acae0dfb4beb5613 "drm/amd/display: Add fast path for cursor plane updates"