Dell XPS 13 (9350) on Ubuntu 16.04 - touchpad stops working or works erratically
Solution 1:
I had the same problem when I put Ubuntu 16.04 on my Dell XPS13 (9350). For me the problem was largely resolved by installing libinput:
sudo apt-get install xserver-xorg-input-libinput
The only issue I have now is that the mouse pointer freezes once in a while. But this is very rare and I can always unfreeze it with a left click. Overall I'm very pleased with the improvement libinput has made to the performance of the touchpad.
You can read more about this solution at https://askubuntu.com/a/678122
J-Linux