Comment 27 for bug 563100

I have the same problem when Xinerama is enabled on NVidia drivers using 2 nVidia 9600GT display adapters and 4 displays. Two of the displays are pivot rotated and two are not rotated. I'm using ratpoison as window manager so it's not related to window managers. When I disable Xinerama the mouse works OK but I cannot "throw" applications from display to another.

I love Ubuntu, but display system has always been perhaps the weakest links of it. On Ubuntu 9.04 NVidia display driver (or X or Xinerama or XRandr) crashed the X every few days. On Ubuntu 9.10 there were mouse jumping problems and not always possible to move mouse from screen to screen and in the first releases there was mouse visible on all four screens at the same time and now Ubuntu 10.04 has this new problem where it is impossible to move mouse from screen to screen using Xinerama. I know it's still only Beta 2 but because of history of unsolved problems I'm really really afraid that this will never be fixed.