Created attachment 114285 [details]
Data from /sys/class/drm/card0/error
Hang in desktop then this message in dmesg:
[260752.759962] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[260752.759963] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[260752.759963] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[260752.759964] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[260752.759965] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
Data from /sys/class/drm/card0/error attached
*** This bug has been marked as a duplicate of bug 54226 ***