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[Launchpad <1071722@xxxxxxxxxxxxxxxxxx>]

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.

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https://bugs.launchpad.net/bugs/1071722

Title:
  Mouse cursor duplicated in dual screen setup

Status in xorg package in Ubuntu:
  Expired

Bug description:
  I have attached a external monitor to my laptop. When I my the mouse
  from the primary display (my laptop screen) to the secondary display
  (external monitor), the mouse cursor image gets duplicated. On the
  primary screen it freezes its last location (so moving the mouse more
  quickly, makes sure that the mouse image is clearly visible) and on
  the secondary screen it keeps on performing as it should. When I move
  the mouse back to the primary screen, the duplicated mouse image
  disappears and everything works like normal again. When the
  duplication is 'active' the frozen mouse, still changes it's image
  (pointing finger, 'text thingy', resizing arrows, etc.) when my mouse
  on the secondary screen is hovering over elements that makes the image
  change. Since Ubuntu 12.10 I use the xserver-xorg-video-radeon
  package, as fglrx does not support my ATI video card (HD 3650)
  anymore. So I do not know whether the problem is also existing
  pre-12.10. This is not reproducible in the live environment of 13.10
  and 14.04, but is in the installed ones.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: xserver-xorg-video-ati (not installed)
      -> xserver-xorg-video-radeon (1:6.99.99~git20120913.8637f772-0ubuntu1)
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
  Date: Fri Oct 26 12:46:13 2012
  InstallationDate: Installed on 2012-10-19 (6 days ago)
  InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1)
  MarkForUpload: True
  SourcePackage: xserver-xorg-video-ati
  UpgradeStatus: No upgrade log present (probably fresh install)
  ---
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  DistroRelease: Ubuntu 13.10
  InstallationDate: Installed on 2013-11-20 (44 days ago)
  InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MarkForUpload: True
  Package: xorg 1:7.7+1ubuntu6
  PackageArchitecture: amd64
  Tags:  saucy
  Uname: Linux 3.12.4-031204-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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