Touchpad configuration for Thinkpad T440p (and probably other thinkpads in the same series)

90-thinkpad-touchpad.conf

# Drop this file into /etc/X11/xorg.conf.d

# This configures the middle and right-click areas at the *top* of the touchpad
# only. The main and bottom areas are left-click.
# The key setting is that AreaTopEdge is set to prevent you from moving the 
# mouse cursor by accident while clicking the trackpoint buttons.

# Inspired by http://who-t.blogspot.ca/2013/12/lenovo-t440-touchpad-button.html

Section "InputClass"
    Identifier "t440p touchpad"
    MatchDriver "synaptics"
    Option "PalmDetect" "on"
    Option "AreaTopEdge" "45%"
    Option "SoftButtonAreas" "60% 0 0 45% 40% 60% 0 45%"
EndSection