This crash occurred again last night. I believe it was due to the computer trying to suspend/hibernate when becoming dangerously close to running out of battery.
Computer did not successfully hibernate, and soon halted completely when the battery ran out. -- [i855 i915] Xorg crashed with SIGSEGV in drm_intel_bo_unpin() https://bugs.launchpad.net/bugs/345796 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs