Touchpad scroll not working in Ubuntu

Installing gsynaptics – a graphical interface to control the touchpad

This app does however require that SHMConfig be enabled.


To do this, open a terminal and enter :

Try this open a terminal by pressing ctrl+alt+t 

sudo gedit /etc/hal/fdi/policy/shmconfig.fdi

and in the file that opens, place the following text:

<?xml version="1.0" encoding="UTF-8"?>
<deviceinfo version="0.2">
<device>
<match key="input.x11_driver" string="synaptics">
<merge key="input.x11_options.SHMConfig" type="string">True</merge>
</match>
</device>
</deviceinfo>

Now you can install gsynaptics:

sudo apt-get install gsynaptics

The final step is to reboot, so that SHMConfig is enabled. Once rebooted, you will have a new item in your Preference menu, “Touchpad” (which is gsyanptics).

Visit this link for more details :

http://gsynaptics.sourceforge.jp/

Click on the image to enlarge.

Or, Alternatively try out this :

Try this open a terminal by pressing ctrl+alt+t then type:

sudo modprobe -r psmouse
sudo modprobe psmouse proto=imps

Then if it works please create a file "/etc/modprobe.d/touchpad.conf" and put "options psmouse proto=imps" in it, so, type:

gksudo gedit /etc/modprobe.d/touchpad.conf

put the row:

options psmouse proto=imps

into the file, save and close, then reboot to test if it works...