synaptics and ALPS DualPoint TouchPad

Sérgio Basto sergio at
Sun Sep 8 15:31:46 PDT 2013

On Dom, 2013-09-08 at 18:27 +0000, Jethro Tull wrote: 
> The ALPS DualPoint TouchPad synaptics in linux is way too sensitive.
> To check it one only needs to put on finger on it and near another
> one, he'll notice that even ~1 cm far the second finger will make the
> pointer on the screen vibrating. It seems to be really an issue with
> the driver rather than settings. 

Hi, you seems that already set yours touchpad using synclient, 
if is an driver problem, you should look and report on 
Product: Drivers
Component: Input Devices

should be something like
the story to have drive for my ALPS. 
My ALPS is not two finger capable... 

> If a high value is given to FingerHigh parameter it will make the
> activation of the pointer harder for the finger but as soon as the
> pointer is under finger control, the second finger proximity influence
> is exactly the same. Another annoying effect of this too high
> sensitivity is that when scrolling with two fingers, the fingers need
> to to be separated with nearly 7 mm minimum, otherwise it seems to see
> only one finger.
> Though ALPS touchpad seems not well designed, this issue comes from
> the linux synaptics driver since this touchpad works much better in
> windows. In windows, even when the two finger are tightly in contact
> scrolling works.

Sérgio M. B.

More information about the xorg mailing list