I am using gnome 3.17.90 on XPS 13 2015 , arch linux. I tried use xf86-input-libinput. The touchpad works well as a mouse and for scrolling up and down.
I dont understand how can I make the multitouch for 3 and 4 fingers to work correctly. Zoom In ,Zoom Out...
I tried also with synaptic and the same problem.