有下面內容
Section "InputClass"
Identifier "touchpad overrides"
# This makes this snippet apply to any device with the "synaptics" driver
# assigned
MatchDriver "synaptics"
####################################
## The lines that you need to add ##
# Enable left mouse button by tapping
Option "TapButton1" "1"
Option "TapButton2" "3"
# Enable vertical scrolling
Option "VertEdgeScroll" "1"
# Enable right mouse button by tapping lower right corner
Option "RBCornerButton" "3"
####################################
EndSection
