It is also recommended to _disable_ VT-d(Intel Virtualization Technologies) in the BIOS when using:
i915_semaphores=1 boot option. This increases the stability of the stack / system, according to Intel's release notes for this option. This fixed my DELL Inspiron 3646 using a J2900 cpu BayTrail / ValleyView SoC on Ubuntu 15.04. -- 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: 8086:2a02 [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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
