I hope this doesn't necro this thread. But I can add some information around this bug, and possible fixes for those plagued by it.
I had this problem, and it developed after accidentally deleting my home directory, and rebuilding it piecemeal from an old backup (so it may be configuration related), and after trying to install ATI proprietary drivers through kubuntu's driver manager. The specific conditions where the mouse cursor would show up on the primary monitor was: when I moved the mouse to the secondary monitor, the cursor would show up at the same horizontal position that the crossover happened once the mouse cursor changed icons (vertical position was dependant on the speed the mouse was moving when it changed screens). The ghost cursor would then stay on the primary screen and would mimic the mouse icon, until the mouse was moved back to primary. My fix seemed to be to remove proprietary drivers and reinstall open source drivers. I also needed to force install a dependency for the open source drivers. sudo apt-get remove fglrx* sudo apt-get install xserver-xorg-video-ati sudo apt-get install xorg-video-abi-15 sudo apt-get install xserver-xorg-video-ati Hope this helps anyone looking for answers. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1071722 Title: Mouse cursor duplicated in dual screen setup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1071722/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
