I think I have found a way around this bug. It's not pretty, and I must
give credit for the idea to Nicolas Caval, the person who reported the
same bug on the Debian bug tracker. He found a way around the bug for
his needs, but it didn't work for me. Here's what I did to make it work:
1. apt-get source xserver-xorg-input-synaptics
2. sudo apt-get build-dep xserver-xorg-input-synaptics
3. cd xserver-xorg-input-synaptics*
4. gedit synaptics.c
5. go to line 1610, where you'll find:
int timeleft;
int i;
/* update hardware state in shared memory */
para->x = hw->x;
para->y = hw->y;
para->z = hw->z;
6. insert the following code right between the two blocks of code, so it
looks like this:
int timeleft;
int i;
/* this is crap, but it saves the day */
if (hw->x == 1 && hw->y == 5855)
{
hw->numFingers = 0;
hw->fingerWidth = 0;
hw->z = 0;
hw->x = HIST(0).x;
hw->y = HIST(0).y;
}
/* update hardware state in shared memory */
para->x = hw->x;
para->y = hw->y;
para->z = hw->z;
7. save & close the file
8. sudo dpkg-buildpackage
9. cd ..
10. sudo dpkg -i xserver-xorg-input-synaptics*.deb
11. restart X with CTRL+ALT+Backspace
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Status: Confirmed => Fix Committed
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Synaptic touchpad fails to register some of the taps for tap-to-click
https://bugs.launchpad.net/bugs/133060
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