https://bugs.freedesktop.org/show_bug.cgi?id=91278
--- Comment #41 from Mathias Tillman master.homer@gmail.com --- Just tried it again with the latest drm-next-4.4 and the kernel parameters amdgpu.enable_scheduler=0 amdgpu.vm_debug=1 amdgpu.enable_semaphores=1. Can't even make it to the beginning of the test (it hangs on the loading screen, if not before that - I have OpenGL acceleration enabled in kwin) when vm_debug=1 before hanging with a bunch of VM faults. If I set vm_debug to 0 it at least starts properly. Not sure if that was the intended behaviour, but that's what happens in any case.