Ubuntu
xserver-xorg-input-synaptics package

  1. Bug #554980
  2. Comment #23

Comment 23 for bug 554980

Revision history for this message
John Baptist (jepst79) wrote : Re: two finger scroll/multitouch not working on lenovo thinkpad w510 having SynPS/2 Synaptics TouchPad..

These instructions assume that you are using up-to-date Lucid with a Synaptic touch pad:

1. First make sure that you have a Synaptics touch pad. Execute the command:

xinput list|grep Synaptics

You should see this (or something similar):

⎜ SynPS/2 Synaptics TouchPad id=11 [slave pointer (2)]

2. Then execute the following command (all on one line) to temporarily enable two-finger scrolling via multitouch emulation:

synclient TapButton2=3 HorizTwoFingerScroll=1 VertTwoFingerScroll=1 EmulateTwoFingerMinZ=29 EmulateTwoFingerMinW=5 JumpyCursorThreshold=200

If the above command produces an error, you don't have a compatible touchpad. If it doesn't produce an error, but two-finger scroll doesn't work either, try adjusting the value of EmulateTwoFingerMinW and EmulateTwoFingerMinZ in the above command and executing it again. A smaller value in EmulateTwoFingerMinW will accept a narrower touch to activate scrolling.

3. To make changes permanent, follow the instructions in the attached file.