[Bug 21180] New: Mouse buttons unreliable with recent kernels

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Ubuntu | linux

           Summary: Mouse buttons unreliable with recent kernels
           Product: Ubuntu
           Version: unspecified
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: linux
        AssignedTo: ben.collins at ubuntu.com
        ReportedBy: ubuntu-bugs at nullinfinity.org
         QAContact: kernel-bugs at lists.ubuntu.com


With recent kernels, mouse buttons have been unreliable for me. Clicking on an
icon often produces a double click and trying to drag a window is hard since the
button often releases while I'm moving the window. This happens both with my
Synaptics touchpad and my Bluetooth mouse.

I believe that the last kernel that had my mice functioning reliably was
2.6.12-8 and that the problems started in 2.6.12-9. However, it's hard to tell
since I've since upgraded to Dapper and the new udev is not backwards
compatible. If you like, I could always temporarily install the old udev and try
to narrow down the problem.

In attempting to diagnose the problem, I did

xev |grep -i button

and click the button. At first nothing is printed, but on the third click the
following appears:
ButtonPress event, serial 26, synthetic NO, window 0x3800001,
    state 0x0, button 1, same_screen YES
ButtonRelease event, serial 26, synthetic NO, window 0x3800001,
    state 0x100, button 1, same_screen YES
ButtonPress event, serial 26, synthetic NO, window 0x3800001,
    state 0x0, button 1, same_screen YES
ButtonRelease event, serial 26, synthetic NO, window 0x3800001,
    state 0x100, button 1, same_screen YES
ButtonPress event, serial 26, synthetic NO, window 0x3800001,
    state 0x0, button 1, same_screen YES
ButtonRelease event, serial 26, synthetic NO, window 0x3800001,
    state 0x100, button 1, same_screen YES


Is there some weird kind of buffering going on?

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