Public bug reported:

Binary package hint: xserver-xorg-input-synaptics

I think there might be a problem in the synaptics driver.  I'm using my
powerbook G4 on Ubuntu Jaunty with a recent kernel (2.6.30-rc4 ish) and
the appletouch driver.

I have 'enable mouse clicks with touchpad' disabled in gnome's settings
which causes the synaptics driver to do just that.  I can't tap to left
2-tap to middle, nor 3-tap to right click.  However, if I have the mouse
button down, I can still double tap to middle click or triple tap to
right click.

This issue perks up when selecting text.  While dragging, all of a
sudden it would paste.  I guess I have a big finger or a sensitive
pad...  During my debugging, I was even *very* careful about having only
one finger and the button pressing finger was from the other hand and
not near the pad.

I was able to narrow it down after much frustration, and I can imagine
regular users giving up much easier than I would.

This does not happen in a text console using gpm, so I'm fairly
confident it's entirely synaptics.

---

The Gnome setting for synaptics to disable tap to click is broken.  It
disables tap, but it does not disable click.

I need to manually do:

xinput set-int-prop appletouch "Synaptics Click Action" 8 1 0 0

---

>From Peter Hutterer on this issue:

- TapButtonX (Tap Action)
  This is the behaviour that makes the driver spit out a button press when you
  tap it. IMO 1-3-2 is the sensible behaviour.
- ClickFingerX (Click Action)
  This is the behaviour when you have the left button down and you tap. So
  ClickFinger1=3 means if you hold the phys. button down and you tap with a
  single finger, you get a right button press. This should be aligned with
  tap-button for consistency.
  You're affected by that because you have only one button - so ClickFinger
  activates itself automatically for 1-3-2. I don't get this because I have
  more physical touchpad buttons.

---

Peter wrote an updated patch based and pushed it upstream:
http://bugzilla.gnome.org/show_bug.cgi?id=578444

This patch should be used instead of the one currently in ubuntu.

** Affects: xserver-xorg-input-synaptics (Ubuntu)
     Importance: Undecided
         Status: New

-- 
synaptics driver middle clicks on text selection
https://bugs.launchpad.net/bugs/371495
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