Tecra Z50-C Touchpad: 2 Fingers scroll results in spurious middle click and right click

Question

Using ubuntu 16.04 freshly installed, the touchpad is unusable when using the scrolling with 2 fingers. Is there anyway to use another driver or a generic one (seems that the one used during the ubuntu install is working).

Here is my xinput -list output:

⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                     id=11   [slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                     id=12   [slave  pointer  (2)]
⎜   ↳ AlpsPS/2 ALPS DualPoint TouchPad          id=17   [slave  pointer  (2)]
⎜   ↳ AlpsPS/2 ALPS DualPoint Stick             id=16   [slave  pointer  (2)]

Answer 1

After investigiating I found that

Enable two-finger scrolling on ALPS touchpad which helps to fix the issue.

sudo echo "options psmouse proto=imps" > /etc/modprobe.d/psmouse.conf 

modprobe -r psmouse

modprobe psmouse