Touchscreen fires incorrect events when moving fast

[nh2]

When I press a finger onto my touch screen (Dell Latitude 2100) on the Desktop background and moving it around fast (especially down fast), the context menu pops up. Using Karmic.

Xev shows a

ButtonPress event, serial 32, synthetic NO, window 0x4000001,
    root 0xff, subw 0x0, time 1900807, (73,116), root:(664,166),
    state 0x0, button 3, same_screen YES

when that happens and some MotionNotifies later a

ButtonRelease event, serial 32, synthetic NO, window 0x4000001,
    root 0xff, subw 0x0, time 1901664, (90,77), root:(681,127),
    state 0x400, button 3, same_screen YES

Are there any hidden touch screen guestures I do not know about or is this a bug?

[lspci]
00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GME Express Memory Controller Hub [8086:27ac] (rev 03)
     Subsystem: Dell Device [1028:02d6]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03)
     Subsystem: Dell Device [1028:02d6]

[nh2 (nh2)]

NOTE: I do not experience this on Jaunty.

[Bryce Harrington (bryce)]

Hi nh2,

Please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log (and maybe Xorg.0.log.old) file from after reproducing this issue. If you've made any customizations to your /etc/X11/xorg.conf please attach that as well.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[nh2 (nh2)]

And I have no xorg.conf.

[Bryce Harrington (bryce)]

[This is an automatic notification.]

Hi nh2,

This bug was reported against an earlier version of Ubuntu, can you
test if it still occurs on Lucid?

Please note we also provide technical support for older versions of
Ubuntu, but not in the bug tracker. Instead, to raise the issue through
normal support channels, please see:

    http://www.ubuntu.com/support

If you are the original reporter and can still reproduce the issue on
Lucid, please run the following command to refresh the report:

  apport-collect 414749

If you are not the original reporter, please file a new bug report, so
we can work with you as the original reporter instead (you can reference
bug 414749 in your report if you think it may be related):

  ubuntu-bug xorg

If by chance you can no longer reproduce the issue on Lucid or if you
feel it is no longer relevant, please mark the bug report 'Fix Released'
or 'Invalid' as appropriate, at the following URL:

  https://bugs.launchpad.net/ubuntu/+bug/414749

[nh2 (nh2)]

I can't check it because my touchscreen isn't handled by evtouch anymore, but by some other buggy touch screen driver in Lucid.

I installed xserver-xorg-input-evtouch, but evtouch does not become active.

How can I make my touch screen use the evtouch driver to check the status of this bug?

[Timo Aaltonen (tjaalton)]

Evtouch is going to be removed from the archive starting in natty, closing bugs that become obsolete due to that. Use the 'evdev' driver for touchscreens.