Alright, well I think it's likely a kernel drm bug. I'll forward you over thataway if you want to help improve things.
** Package changed: xserver-xorg-video-intel (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/711954 Title: Cannot use external monitor at its native resolution -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs