I'm running Kubuntu 16.04 with the newest kernel on my SP3. Everything works fine except the touchpad, there is no option to activate two-finger-scrolling and 2-finger-tap-right-click.
I've found that source, but it seems to be on 4.3. and I'm using 4.6.x.!
But maybe someone have already tried it and could tell me, whether the touchpad works with 2-finger-scrolling?
Any other suggestions? Could someone help me?