The default configuration of the xf86-input-synaptics driver makes the touch-pad almost unusable (on the T440s). Clicks/Taps do not register properly, mis-clicking, no palm detection, no soft buttons where they should be, and so on… The following configuration can be put in
/etc/X11/xorg.conf.d/99-synaptics.confAs a result the touch-pad will be a lot more ‘calm’ than before and the middle & right click button areas match with the printed ones on top of the touch-pad.
New laptop, new woes