libinput and AlpsPS/2 ALPS DualPoint TouchPad

[Peter Hutterer]

On Thu, Oct 27, 2016 at 05:12:25PM +0100, Sérgio Basto wrote:
> Hi, 
> After read synaptics will be deprecated, I tried change my touchpad to
> libinput but vertical scroll doesn't work [1]. The story of detect
> this ALPS is back from 2009 [2], have we any place more specific to
> track download libinput problems ?. I'm using Fedora 23, xorg-x11-drv-
> libinput-0.16.0 and xorg-x11-drv-synaptics-1.8.3. 

file a bug against libinput please and assign it to me, we'll take it from
there.
https://bugs.freedesktop.org/enter_bug.cgi?product=wayland&component=libinput

> Another question how I disable libinput and enable synaptics, in
> xorg.conf, because I just can have synaptics working when I remove
> libinput package , which for tests is very annoying . 

the driver selection is done via xorg.conf.d snippets. what I recommend for
testing is copy this into /etc/X11/xorg.conf.d/99-force-synaptics.conf.disabled

Section "InputClass"
        Identifier "Force synaptics"
        MatchIsTouchpad "on"
        Driver "synaptics"
EndSection


then symlink the file 
    ln /etc/X11/xorg.conf.d/99-force-synaptics.conf.disabled \
       /etc/X11/xorg.conf.d/99-force-synaptics.conf

every time you want to use synaptics, add the symlink. every time you want
to use libinput, delete the symlink. That's what I'm doing here and it works
just fine.

Cheers,
   Peter


> Thanks, 
> 
> [1]
> https://blog.laimbock.com/2014/11/23/howto-fix-a-too-sensitive-touchpad-on-linux/
> https://blog.laimbock.com/2014/11/23/howto-fix-a-too-sensitive-touchpad-on-linux/#comment-75509
> 
> [2]
> https://bugzilla.kernel.org/show_bug.cgi?id=14660
> 
> -- 
> Sérgio M. B.
> 
> 
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