I have the same symptoms after finally upgrading to trusty a few days ago. When hotplugging or removing an external monitor while in the Unity desktop, the screen image starts blinking a static image within a few seconds. The mouse cursor continues to operate normally.
I only see this under Unity - login screen (lightdm I guess) and GNOME Flashback (with or without Compiz) accept a monitor hotplug perfectly and extend the desktop in the process. Latest Intel's graphics stack performs the same. Thinkpad X200, Intel GM45 graphics, 1280x800 LCD, various VGA secondary screens (1024x768 to 1920x1200) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1315286 Title: Regression: screen corruption after update to trusty To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1315286/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
