https://bugs.freedesktop.org/show_bug.cgi?id=105819
--- Comment #2 from Andy Burns freedesktopbugz@adslpipe.co.uk --- Experienced same/similar error on Fedora 28 beta, with an RX 460 card
$ lspci | grep AMD
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 460/560D / Pro 450/455/460/560] (rev cf) 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device aae0
$ uname -a Linux localhost.localdomain 4.16.1-300.fc28.x86_64 #1 SMP Mon Apr 9 15:29:05 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Sorry, I don't know what the fedora version corresponds to in terms of freedesktop version
It happened after leaving pixmark_volplosion_windowed running overnight
08:27:10 kernel: [drm] GPU recovery disabled. 08:27:10 kernel: [drm] GPU recovery disabled. 08:27:10 kernel: [drm] IP block:sdma_v3_0 is hung! 08:27:10 kernel: [drm] IP block:gfx_v8_0 is hung! 08:27:10 kernel: [drm] IP block:gmc_v8_0 is hung! 08:27:10 kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout, last signaled seq=1000210, last emitted seq=1000212 08:27:07 kernel: [drm] GPU recovery disabled. 08:27:07 kernel: [drm] GPU recovery disabled. 08:27:07 kernel: [drm] IP block:sdma_v3_0 is hung! 08:27:07 kernel: [drm] IP block:gfx_v8_0 is hung! 08:27:07 kernel: [drm] IP block:gmc_v8_0 is hung! 08:27:07 kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, last signaled seq=2338524, last emitted seq=2338526
Then (I think) about 30 minutes later the machine either panicked, or locked up.