Mouse wheel emulation on a Thinkpad X240

[Enric Morales]

Hello all. I've been trying various configurations on the net to
achieve wheel emulation on a Thinkpad X240. Unfortunately none of the
methods I tried worked. I guess the problem is that the touchpad and
the trackpoint report on different devices instead of one. Here's what
xinput says:
⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  
(2)]
⎜   ↳ /dev/wsmouse0                           	id=7	[slave  pointer  
(2)]
⎜   ↳ /dev/wsmouse                            	id=8	[slave  pointer  
(2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard 
(3)]
    ↳ /dev/wskbd                              	id=6	[slave  keyboard 
(3)]

My touchpad.conf in xorg.conf.d:

Section "InputClass"
        Identifier "Default clickpad buttons"
        MatchIsTouchpad "true"
        Driver "synaptics"

        Option "SoftButtonAreas" "60% 0 0 30% 40% 60% 0 30%"
        Option "AreaBottomEdge" "-1"
        Option "EmulateWheel" "1"
        Option "EmulateWheelButton" "2"
EndSection

I've also tried all the xinput-fu I could find, to no avail. Maybe any 
of
you has a config snippet that works on a X240?

Thanks.