For me, the problem is fixed when applying the patches in
http://xps13-9333.appspot.com/#touchpad
or
https://askubuntu.com/questions/462135/touchpad-issue-jumping-cursor-while-typing-ubuntu-14-04-syndaemon-dont-help
For me, the problem is fixed when applying the patches in
http:// xps13-9333. appspot. com/#touchpad
or
https:/ /askubuntu. com/questions/ 462135/ touchpad- issue-jumping- cursor- while-typing- ubuntu- 14-04-syndaemon -dont-help