XPS 13 9343 (2015 Developer Edition) Touchpad Issue

Hi,

i have a problem with the touchpad of my XPS 13 9343.

History:

In the beginning i did a clean install of 14.04, which didn't work well.

After that i installed 15.04 and after some hard lessons i got everything working except a stable WiFi driver (Permanent freezes while suspend resume). The Broadcomm kernel modules are really f**ed up!

The touchpad was not an issue then, i was really happy with the way it worked. Only Two-Finger rightclick and typing detection wasn't always working as expected.

So i bought the Intel WiFi card, build it in and did a clean install of Kubuntu 15.04 followed by a actual Kernel 4.1.x.

System runs stable since then, some minor issues, but i think they mostly KDE Issues.

However from one day to the other the touchpad isn't functioning properly anymore.

When i use

Xinput test 15

and i move one finger on the touchpad from left to right the output gets very view movements but lots of Left Click events.

It doesnt't matter, if i move fast or slow, or press hard or mild. I always get more Left Clicks, than movements.

This results in practically unusable touchpad, because one move expands windows, marks text, clicks anything under the movement.

I already tried several other forum, askubuntu etc. threads to fix it, but honestly gave up and put in an external mouse.

X configuration seems to be ok.

the touchpad is running in i2c mode. psmouse is blacklisted.

Anbody had experienced similar issues and/or an idea what this could be or where to look?

Best,

 C.