[Bug 11631] New: PS2 mouse jumps around the GNOME desktop

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http://bugzilla.ubuntu.com/show_bug.cgi?id=11631
Ubuntu | gnome-desktop

           Summary: PS2 mouse jumps around the GNOME desktop
           Product: Ubuntu
           Version: unspecified
          Platform: i386
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gnome-desktop
        AssignedTo: seb128 at ubuntu.com
        ReportedBy: mateusza at staszic.waw.pl
         QAContact: desktop-bugs at lists.ubuntu.com


I have a strange problem on my laptop computer running Ubuntu.

When I use built-in touchpad (which is internally conected as PS/2) and GNOME,
my mouse pointer sometimes goes crazy and jumps around the desktop, "clicks"
everthing he points, moves and opens windows, drags toolbars etc. It's
unpredictible and happens about once minute. After that crazy behaviour mouse
pointer is always on the edge of the screen, sometimes in corners.

The most interesting fact, is that it DOESN'T HAPPEN when I use external USB
mouse. (using external PS/2 mouse causes the same problem). That would suggest
it's a hardware problem, but when I switch to XFCE4 instead of GNOME or when I
use gpm in textmode, the problem DOESN'T occur! I have no idea, what's the
reason of that. I tried to adjust mouse properties in gnome configuration, but
that doesn't help.

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