ubuntu-x-swat team mailing list archive

[Chris Halse Rogers <raof@xxxxxxxxxx>]

Aha.  It seems that this is specific to VGA outputs.  I've run into bug
#600116 (filed separately to attach all the relevant information and
because it's different hardware) performing the steps with a VGA
connector attached, but not a DVI/DisplayPort connection.

In this case, dmesg ends up full of lines like:
[  674.521262] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[  674.521307] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1520 at 52)
indicating a GPU hang.

Running /usr/share/apport/apport-gpu-error-intel.py while this is
happening will construct an apport report containing all the relevant
information - particularly: dmesg, Xorg.0.log,
/sys/kernel/debug/dri/0/i915_error_state, and the output of
intel_gpu_dump.

-- 
Display error when returning from sleep after docking
https://bugs.launchpad.net/bugs/531069
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