Same user saw similar gpu lockup (same PGTBL error code at least) during a resume from suspend.
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/694244
Same user saw similar gpu lockup (same PGTBL error code at least) during a resume from suspend.
https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- intel/+ bug/694244