Ubuntu
xserver-xorg-input-synaptics package

  1. Bug #554980
  2. Comment #10

Comment 10 for bug 554980

Revision history for this message
Sal Mazzola (salmaz) wrote : Re: two finger scroll/multitouch trackpad not working on lenovo thinkpad w510

The change can be made permanent by creating a file /etc/X11/xorg.conf.d/11-synaptics.conf with the following:

Section "InputClass"
        Identifier "touchpad twofinger"
 MatchProduct "SynPS/2 Synaptics TouchPad"
        MatchIsTouchpad "on"
        Driver "synaptics"
 Option "SHMConfig" "true"
 Option "HorizEdgeScroll" "on"
 Option "VertEdgeScroll" "on"
 Option "VertTwoFingerScroll" "on"
 Option "EmulateTwoFingerMinZ" "4"
 Option "HorizTwoFingerScroll" "on"
 Option "CornerCoasting" "on"
 Option "PalmDetect" "on"
 Option "CircularScrolling" "on"
 Option "CircScrollTrigger" "3"
EndSection

I needed to copy the file from /usr/lib/X11/xorg.conf.d/05-evdev.conf into the same directory to prevent the keyboard from not being configured. Not sure why this was necessary.

This was based on discussion in http://ubuntuforums.org/showthread.php?t=1467189.

I think the udev configuration didn't find its way into the new xorg.conf.d based configuration. The gnome setting for two-finger scroll is greyed out, but the two finger scroll works.

Not sure if the SHMConfig does anything since I read elsewhere that it no longer works with Xorg 1.8.