Comment 62 for bug 1218973

For simplification, you could use the kernel I compiled with the above patches from here:

https://www.fs.tum.de/~edelmann/synaptics-rmi

Now my touchpad is recognized as full synaptics touchpad, and the touchscreen still works.

An additional, minor change: When the XPS12 screen is flipped, the touchpad is now not disabled, as was the case earlier. The keyboard is disabled as before.

I haven't noticed any side effects while working with this kernel in the past few weeks.

It would be great if these patches work their way into Trusty.