https://bugzilla.kernel.org/show_bug.cgi?id=105581
--- Comment #2 from Michel Dänzer michel@daenzer.net --- FWIW, rotation doesn't work because glamor fails to initialize, so all hardware acceleration is disabled (I posted a xf86-video-amdgpu patch to not advertise rotation capability in this case). Looks like Mesa is either misconfigured or too old for your card.