[Bug 102322] System crashes after "[drm] IP block:gmc_v8_0 is hung!" / [drm] IP block:sdma_v3_0 is hung!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102322

--- Comment #12 from Andrey Grodzovsky <andrey.grodzovsky at amd.com> ---
(In reply to dwagner from comment #2)
> Just to mention this once again: These system crashes still occur, and way
> too frequently to consider the amdgpu driver stable enough for professional
> use. Sample dmesg output from today:
> 
> Feb 24 18:26:55 [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout,
> last signaled seq=5430589, last emitted seq=5430591
> Feb 24 18:26:55 [drm] IP block:gmc_v8_0 is hung!
> Feb 24 18:26:55 [drm] IP block:gfx_v8_0 is hung!
> Feb 24 18:27:02 [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0
> timeout, last signaled seq=185928, last emitted seq=185930
> Feb 24 18:27:02 [drm] IP block:gmc_v8_0 is hung!
> Feb 24 18:27:02 [drm] IP block:gfx_v8_0 is hung!
> Feb 24 18:27:05 [drm:amdgpu_dm_atomic_check [amdgpu]] *ERROR*
> [CRTC:43:crtc-0] hw_done or flip_done timed out

Can you load the kernel with grub command line amdgpu.vm_update_mode=3 to force
CPU VM update mode and see if this helps ?

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