How to disable synaptics touchpad vertical scrolling
 

I am using Debian Lenny on T61 (refer to my signature). I found vertical scrolling of the touch pad is annoying since T61 has a small touch area. I checked gnome options and tried to use tpconfig but didn't make it. Here is the tpconfig -i output:

Found Synaptics Touchpad.
Firmware: 8.96 (multiple-byte mode).
Sensor type: unknown (0).
Geometry: rectangular/landscape/up.
Packets: absolute, 80 packets per second.
Corner taps disabled; no tap gestures.
Edge motion: none.
Z threshold: 6 of 7.
2 button mode; corner tap is right button click.

From tpconfig man helps, I even didn't find one option for vertical scrolling.

Any one has a idea? Thank you very much!

And here is my xorg.conf touch pad section:

Section "InputDevice"
Identifier "Synaptics Touchpad"
Driver "synaptics"
Option "SendCoreEvents" "true"
Option "Device" "/dev/psaux"
Option "Protocol" "auto-dev"
Option "HorizScrollDelta" "0"
EndSection

BTW, what does "HorizScrollDelta" mean? Is there something like "VerticalScrollDelta" can be used to disable vertical scrolling? Thank you!

Please see man synaptics for the full story.

Thank you!

There is a bool type VertEdgeScroll option in man synaptics. It works!

Section "InputDevice"
Identifier "Synaptics Touchpad"
Driver "synaptics"
Option "SendCoreEvents" "true"
Option "Device" "/dev/psaux"
Option "Protocol" "auto-dev"
# Option "HorizScrollDelta" "0"
EndSection
now you will not have horizontal you want that.
Option "ZAxisMapping" "4 5 6 7"
option 4 5 are up and down 6 7 left and right give it a try let me know.
Option "ZAxisMapping" " 6 7"

Fedora 10, no tap click, no pad scroll:
 

Hi

I did this yesterday to disable clicking and scrolling on toucpad:

(machine: BIM Thinkpad T43, OS: Fedora 10 i386)

# cat > /etc/hal/fdi/policy/synaptics_notabnorscroll.fdi <<EOF
<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- copy this to /etc/has/fdi/policy/ -->
<deviceinfo version="0.2">
<device>
<match key="input.x11_driver" string="synaptics">
<merge key="input.x11_options.SendCoreEvents" type="string">true</merge>
<merge key="input.x11_options.HorizScrollDelta" type="string">0</merge>
<merge key="input.x11_options.MaxTapTime" type="string">0</merge>
<merge key="input.x11_options.RightEdge" type="string">6000</merge>
<merge key="input.x11_options.BottomEdge" type="string">5000</merge>
<merge key="input.x11_options.VertEdgeScroll" type="string">false</merge>
<merge key="input.x11_options.HorizEdgeScroll" type="string">false</merge>
</match>
</device>
</deviceinfo>
EOF


# /etc/init.d/haldaemon restart

# <ctrl-alt-backspace>

(last key combination restarted X server)

After re-login touchpad worked as desired.

I am going to do similar thing with one Ubuntu 8.10 (dell laptop) in near future;
I do not expect much difference getting it to work...

Btw: is there way to insert verbatim text in this forum? The indentation
was lost in the data above (luckily I was not pasting python code ;)