The Gdm log 2 has a backtrace that does appear to be what gets shown
when there's a gpu hang, however no gpu lockup error numbers are shown
in the dmesg as usual.
Please reproduce the freeze, and then with the system frozen ssh into it
(you may have to connect ethernet cable) and collect both 'dmesg >
dmesg.txt' and your /sys/kernel/debug/dri/0/i915_error_state and attach
both to this bug report.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/749775
Title:
[gm45] Xorg freeze (except mouse pointer) after closing the lid
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