This may be duplicate but I am not sure it is assigned to the correct package so I am not marking it as duplicate: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/877878
This may be duplicate but I am not sure it is assigned to the correct package so I am not marking it as duplicate: https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- intel/+ bug/877878