Ubuntu - Enable TrackPoint On Thinkpads

To query the available options

    xinput list-props "TPPS/2 IBM TrackPoint"

To enable vertical scrolling

    xinput set-int-prop "TPPS/2 IBM TrackPoint" "Evdev Wheel Emulation" 8 1
    xinput set-int-prop "TPPS/2 IBM TrackPoint" "Evdev Wheel Emulation Button" 8 2
    xinput set-int-prop "TPPS/2 IBM TrackPoint" "Evdev Wheel Emulation Timeout" 8 200

To enable horizontal scrolling in addition to vertical scrolling

    xinput set-int-prop "TPPS/2 IBM TrackPoint" "Evdev Wheel Emulation Axes" 8 6 7 4 5

To enable middle button emulation (using left- and right-click simultaneously)

    xinput set-int-prop "TPPS/2 IBM TrackPoint" "Evdev Middle Button Emulation" 8 1
    xinput set-int-prop "TPPS/2 IBM TrackPoint" "Evdev Middle Button Timeout" 8 50