Erratic mouse pointer behaviour with Spice / QXL in a multi-screen setup

Solution Verified - Updated -


  • Mouse pointer starts jittering when dragging item in application
  • For accessing a legacy application we use a virtual machine with 4 heads
  • Xorg is configured to use these 4 heads without Xinerama. There's no window manager running, just plain Xorg.
  • The application is started on a remote system using rexec and Xorg is just used for displaying the application
  • The application expects Xorg to be using :0.x for displaying the 4 separate screens.
  • While using a drag & drop operation in one of the applications on display :0.0, the mouse pointer starts jittering between to different horizontal positions. When moving the mouse further to the right, the mouse pointer is even displayed on display :0.1 even though the application can't reach :0.1. It seems that spice is generating the wrong coordinates for the mouse pointer.


  • Red Hat Enterprise Linux 6
  • xorg-x11-drv-qxl-0.1.0-4.el6
  • spice-client-0.8.2-15.el6_3
  • spice-vdagent-0.14.0-1.el6_3
  • xorg-x11-server-Xorg-1.13.0-11

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