File 11-evdev.conf of Package xf86-input-evdev

Section "InputClass"
        # Novell Bugs #597214, #780626, #843333, #861813
	Identifier      "Trackpoint Wheel Emulation"
	MatchProduct    "TPPS/2 IBM TrackPoint|ThinkPad USB Keyboard with TrackPoint"
        MatchIsPointer  "on"
        Driver  "evdev"
        Option  "EmulateWheel"  "on"
        Option  "EmulateWheelButton"    "2"
        # Since middle button is in use now these button events need to be emulated (bnc#869097)
        Option  "Emulate3Buttons" "on"
EndSection