Abra o gedit e copie e cole as seguintes linhas:
#!/bin/sh
# This script disables the touchpad without disabling buttons by setting Hysteresis
# to an impossible value.
############
# Warning! #
############
# If you have a touchpad with no "Physical" buttons but have to tap the corners
# of your touchpad to simulate physical buttons, put a "#" sign in front of the next
# 4 lines!
synclient LTCornerButton=1
#synclient LBCornerButton=0
synclient RTCornerButton=3
#synclient RBCornerButton=0
# Set PalmDetect on: Needed if the before lines are commented away,
# Doesn't do any harm if they're not
synclient PalmDetect=1
synclient HorizHysteresis=10000
synclient VertHysteresis=10000
# Disable all other touchpad features
synclient VertEdgeScroll=0
synclient HorizEdgeScroll=0
synclient CornerCoasting=0
synclient VertTwoFingerScroll=0
synclient HorizTwoFingerScroll=0
synclient TouchpadOff=2
synclient LockedDrags=0
synclient TapButton1=0
synclient TapButton2=0
synclient TapButton3=0
synclient CircularPad=0
Em seguida, salve-o como /usr/local/bin/DisableTouchPad.sh
Em um tipo de terminal:
chmod a+xr /usr/local/bin/DisableTouchPad.sh
Para ativá-lo, digite:
DisableTouchPad.sh
e teste se isso funciona.
Para tornar esta mudança permanente, vá para o dash, abra "Startup Applications", clique em add, no tipo de comando: /usr/local/bin/DisableTouchPad.sh
e no Name e Comment digite qualquer coisa que o lembre do que se trata. Clique em adicionar novamente.
Presto: um touchpad desativado com os botões ainda ativados!