Created attachment 140587 [details]
Dumps from GALLIUM_DDEBUG

It hangs in OpenGL game immediately after startup almost always (but sometimes
it goes through and works) with dmesg message:
>[drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, last signaled seq=3324, last emitted seq=3327

I tested it on Radeon RX580, mainline kernel 4.18, Mesa 18.1.3 and Mesa git
c0874947f1.

I could provide game code for testing but I would have to package minimal
assets as full game weights pretty much.