Created attachment 104705 [details]
[407229.681239] [drm] stuck on render ring
[407229.681248] [drm] stuck on blitter ring
[407229.681252] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[407229.681254] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[407229.681255] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[407229.681266] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[407229.681268] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
Attached file: /sys/class/drm/card0/error
System: Debian sid amd64.
H/w: Mac Mini mid-2011
*** This bug has been marked as a duplicate of bug 54226 ***