Try without i915.i915_enable_fbc=1 as it is disabled due to it being buggy and can potentially deadlock the system... Which sounds like it should explain your hang.
** Summary changed: - Power Management causes system to be unusable + System freeze after DPMS off with external monitors -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1178706 Title: System freeze after DPMS off with external monitors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1178706/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
