Comment 15 for bug 937378

The last two kernel releases in Precise have somehow re-introduced this issue for me. After many weeks of excellent stability with zero sudden shutdowns, the problem is now back with a vengeance. It happens particularly frequently when unplugging the AC power while the machine is powered on.

Currently I am running kernel 3.2.0-22-35 with boot parameters pcie_aspm=force drm.vblankoffdelay=1 i915.semaphores=1