Fix in natty by xserver-xorg-video-intel 2.13.901 which contains this commit
http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=a44a63d2ff6c01c3dc61de6f736dd441ddd25e52
Fix in natty by xserver- xorg-video- intel 2.13.901 which contains this commit
http:// cgit.freedeskto p.org/xorg/ driver/ xf86-video- intel/commit/ ?id=a44a63d2ff6 c01c3dc61de6f73 6dd441ddd25e52