I have reported the same symptoms earlier with an Intel Core i5 PC running Quantal, bug 1029865. I have installed the kernel from comment #7 also there and booted it, but that machine still shows the ghost VGA display and due to that comes up with a 1024x768 login screen. I have checked with "uname -a" that the fixed kernel is actually running.
Is the fixed kernel not applicable to Quantal? Are more components of Raring needed (like X.org)? If so, I would try an upgrade to Raring. The xrandr output is as follows: ---------- till@till:~$ xrandr Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 VGA1 connected (normal left inverted right x axis y axis) 1024x768 60.0 800x600 60.3 56.2 848x480 60.0 640x480 59.9 HDMI1 disconnected (normal left inverted right x axis y axis) HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 287mm 1920x1080 60.0*+ 1680x1050 59.9 1280x1024 60.0 1280x960 60.0 1280x720 60.0 1024x768 60.0 800x600 60.3 720x576 50.0 720x480 59.9 640x480 60.0 59.9 720x400 70.1 DP1 disconnected (normal left inverted right x axis y axis) DP2 disconnected (normal left inverted right x axis y axis) till@till:~$ ---------- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156310 Title: xrandr detects too many displays To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libxrandr/+bug/1156310/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs