https://bugzilla.kernel.org/show_bug.cgi?id=201539
--- Comment #16 from Steffen Klee (steffen.klee@gmail.com) --- (In reply to danglingpointerexception@gmail.com from comment #15)
@Steffen - Try my steps in the link mate, it may solve your problem. Alex Ducher himself gave me the tip on fixing it.
As far as I understand, you had issues with firmware loading. However, firmware is loading fine on my end: [drm] Found UVD firmware Version: 1.64 Family ID: 9 [drm] Found VCE firmware Version: 50.10 Binary ID: 2