I have a ThinkPad X220T (convertible tablet) which has Intel graphics as well. I have the same issue when I rotate using xrandr manually, or with the screen resolution applet. The area of screen which is "blank" is still usable by the dock and menubar, but does not seem to have rotated properly. See the attached screenshots. landscape and portrait show the problem (similar to the OP), and normal and "borken" show the Ubuntu "dash" (or whatever it is called). As you can see, it fills the screen (1366x768 on this machine) in landscape, but appears to still be "1366x768 when rotated.
** Attachment added: "normal landscape" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/793764/+attachment/2176241/+files/landscape.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/793764 Title: Top area of screen black when rotating screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/793764/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
