Bug#523946: xserver-xorg-input-synaptics: VertScrolling stops working after update to version 1.1.0

[Alexandre Rossi <alexandre.rossi@gmail.com>]

>> I have the same issue as Mirko. Vertical Scrolling does not work after
>> upgrading xserver-xorg-input-synaptics from 0.14.7~git20070706-3 (lenny) to
>> 1.1.0-1 (sid). Downgrading fixes the problem.
>
> It's a configuration issue, with version 1.1.0 most of the default
> values have changed so you will need to explicitly enable some features
> in your xorg.conf or hal fdi files.
> See bugs 523581, 513875, 523528 for more.

This does not seem to be the issue for me, as I successfully
re-enabled Tapping and SHMConfig (for syndaemon) but vertical
scrolling does not work even though the option is modified :
$ synclient -l | grep Vert
    VertScrollDelta         = 25
    VertEdgeScroll          = 1
    VertTwoFingerScroll     = 0

Alex