sudo apt-get install gsynaptics
After installing the software you can find it in the System/Preferences/Touchpad menu. Try to click it and you'll get an error message!
GSynaptics couldn't initialize.
You have to set 'SHMConfig' 'true' in xorg.conf or XF86Config to use GSynaptics
To fix this you need to edit your
sudo gedit /etc/X11/xorg.conf) and find a section like:
Identifier "Synaptics Touchpad"
Option "SendCoreEvents" "true"
Option "Device" "/dev/psaux"
Option "Protocol" "auto-dev"
Option "HorizScrollDelta" "0"
EndSectionadd an option with the code
Option "SHMConfig" "on".
Now you need to restart X. Make sure you save all your work, because restarting X will log you out. Now press
ctrl-alt-backspace. Login and you should now be able to run System/Preferences/Touchpad.
If you still have problems using your touchpad, refer to this complete guide.