Thanks Corey and Hans for your replies. with : InputDevice "Configured Mouse" "SendCoreEvents" it works now:) but ksynaptics no. I have tried to disable touchpad for example, but nothing is happened. I have changed "/dev/input/event1" with "/dev/psaux" for touchpad, and removed : Option "TouchpadOff" "0" but it's not working. Have you any idea? Thanks, Giulio