[Bug 85656] Screen goes black when GPU tries to render some effects - no recovery possible

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85656

--- Comment #1 from Adam <bugzilla at lewicki.at> ---
Comment on attachment 108702
  --> https://bugs.freedesktop.org/attachment.cgi?id=108702
kern.log

These are the relevant lines:
Oct 30 17:24:52 toughy kernel: [  508.804037] [drm] stuck on render ring
Oct 30 17:24:52 toughy kernel: [  508.804045] [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Oct 30 17:24:52 toughy kernel: [  508.804048] [drm] GPU hangs can indicate a
bug anywhere in the entire gfx stack, including userspace.
Oct 30 17:24:52 toughy kernel: [  508.804051] [drm] Please file a _new_ bug
report on bugs.freedesktop.org against DRI -> DRM/Intel
Oct 30 17:24:52 toughy kernel: [  508.804053] [drm] drm/i915 developers can
then reassign to the right component if it's not a kernel issue.
Oct 30 17:24:52 toughy kernel: [  508.804056] [drm] The gpu crash dump is
required to analyze gpu hangs, so please always attach it.
Oct 30 17:24:52 toughy kernel: [  508.805072] [drm:i915_set_reset_status]
*ERROR* render ring hung inside bo (0x7908000 ctx 0) at 0x7908ed0
Oct 30 17:24:53 toughy kernel: [  508.864192] [drm] GMBUS [i915 gmbus vga]
timed out, falling back to bit banging on pin 2
Oct 30 17:24:53 toughy kernel: [  509.312159] [drm:i915_reset] *ERROR* Failed
to reset chip.

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