[Bug 103076] [v4.13 ARCH] GPU HANG: DMAR: DRHD: handling fault status reg 3 (arch reverted the use of intel_iommu=igfx_off)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103076

--- Comment #31 from Carsten Mattner <carstenmattner at gmail.com> ---
With drm-tip ba1af442e4884a1148422a7f92ae2f978cfb26a1 it took 8 hours before
the hangs happened. I managed to have ffmpeg and mpv be reported as the
processes that causes RCS0 hangs, both utilizing VAAPI, but once one hang
happened, anything (Firefox, Chrome) provokes the hang until restarting
the DRM stack (aka kernel restart).

4.9.56 still hang free with same workload and more than 8 hours, as
before.

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