Touchpad synaptics with Xorg on Aspire 5020: ButtonPress ignored

[Gali Drudis Sole <gali@klingon.uab.es>]

Hi,

I have recently installed a Debian/amd64 Linux on an Acer Aspire 5020.
Everything went more or less smootly, only the touchpad is not working properly.
It is recognised as:

Synaptics Touchpad, model: 1, fw: 6.2, id: 0x12a0b1, caps=0xa04713/0x204000

after loading the psmouse module, and works under X (xorg) except for buttons 1
and 3. Pressing them usually does not generate a ButtonPress event (checked with
xev). Instead it is generated when the button is released, and the ButtonRelease
is when the button is released for the second time or moved. This ONLY happens
with buttons 1 and 3, while the rest of the buttons (the 4 scroll buttons) work
fine, as does tapping with 1, 2 or 3 fingers and scrolling, and the pressing
buttons 1 and 3 SIMULTANEOUSLY to emulate button 2.

This happens only when the mouse is configured as a synaptics touchpad. If I
configure it as a regular mouse, the buttons work fine, but tapping and
scrolling stop working.

I wonder if this is a known problem with synaptics touchpads, or with this model
of touchpad. I formerly owned another laptop with a synaptics touchpad and it
worked fine.

Any help will be welcome. Even the possibility of switching buttons 1 <-> 6 and
3 <-> 7 should do the thing, as these do work well.

Thanks in advance,

-- 

Galí Drudis Solé

 gali@klingon.uab.es  -  http://klingon.uab.es/gali
  Edifici Cn., Unitat Química Física, 08193 - Bellaterra
  Universitat Autònoma de Barcelona, Catalonia
 Unitat de Química Física   Tel: +34 93-581.28.57 Fax: 581.29.20
 Unitat de Química Orgànica Tel: +34 93-581.17.10 Fax: 581.12.65