According to the Xorg people working with the bug, in Xinerama mode - event coordinates are relative to the primary secreen - Screen 0. But, in the version of Xorg that now is in use with Lucid (1.7.6) event coordinates are unsigned integers.
With unsigned integers, negative coordinates can not be represented, thus xorg can not function with screens above or to the left of Screen 0. So, if you can, let your upper-left screen be Screen 0. The xorg people have a patch that seems to be working (simply changing back to signed ints). I hope that this will make it into an updated ubuntu Lucid package soon. -- Mouse movement corrupted with Xinerama enabled https://bugs.launchpad.net/bugs/563100 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs