on intel opensource site https://01.org/linuxgraphics/documentation/how-get-last-batch-buffer- gpu-hang
They suggest capturing the output of /sys/kernel/debug/dri/0/i915_error_state cat /sys/kernel/debug/dri/0/i915_error_state > i915_error_state I attached it here in the hope that it could help resolve the problem. ** Attachment added: "cat /sys/kernel/debug/dri/0/i915_error_state > i915_error_state" https://bugs.launchpad.net/linux/+bug/946899/+attachment/3509505/+files/i915_error_state -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/946899 Title: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/946899/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs