Passing noacpi results in similar results (screen flickering on movement, launching fullscreen video causes black screen) though no errors in dmesg.
Passing acpi=off results in normal operation (screen doesn't flicker, launching fullscreen video is fine), however, dmesg gives "vgaarb: this pci device is not a vga device" and the secondary screen does not work. -- display freezes, [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung https://bugs.launchpad.net/bugs/507504 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
