Comment # 10 on bug 954532 from Takashi Iwai

Ah, sorry, I have misread your report: it's a regression on TW, and Leap
worked.

Then, could you install the Leap kernel (4.1.x) on the TW system and boot with
it?  It's available in OBS Kernel:openSUSE-42.1 repo.  You can test the input
device even without graphics, etc.  Use evtest program (install evtest.rpm if
not found).

On Linux console (VT1 or so), run evtest with the input device file (as root). 
Something like:
  evtest /dev/input/by-path/platform-i8042-serio-1-event-mouse

and touch your touchpad.  It'll show the position, button, etc.

You can test the same with TW kernel.