I have upgraded to 17.10 on my Lenovo Carbon X1 ver. 2. Suddenly the drag and drop doesn't work on the touchpad. It used to work on 17.04
I can drag and drop by using the double tap method (click and drag?) when holding down the tap, the second time, but I want the normal method to work also.
Strangely enough drag and drop works on the touchpad on rare occasions which I can't reproduce.
Best Answer
I had a similar issue, and installing
xserver-xorg-input-synaptics
did the trick (found it here).