open Terminal en typ:
gksudo gedit /etc/X11/xorg.conf
Dit aanpassen
Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ExplorerPS/2"
Option "Buttons" "7"
Option "ButtonMapping" "1 2 3 6 7"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "true"
Option "Resolution" "800"
EndSection
grJ.