This is likely a consequence of bug 742213. Your touchpad can give only
pressure information, but pressure data is not reliable enough to be
used by out of the box. For a while, Natty used the pressure data by
default, but this has been reverted due to a report of spurious right
click behavior.
You can restore the previous functionality in two ways:
1. At runtime by running: "xinput set-prop 'SynPS/2 Synaptics TouchPad'
'Synaptics Two-Finger Pressure' 29
2. At X startup by putting the following in your /etc/X11/xorg.conf (create it
if it doesn't exist):
Section "InputClass"
Identifier "touchpad catchall with default scroll"
Driver "synaptics"
MatchIsTouchpad "on"
MatchDevicePath "/dev/input/event*"
Option "EmulateTwoFingerMinZ" "29"
EndSection
Because this is the intended result of the change to synaptics, I'm
marking this as "won't fix".
** Package changed: utouch (Ubuntu) => xserver-xorg-input-synaptics
(Ubuntu)
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Status: New => Won't Fix
** Changed in: utouch
Status: New => Invalid
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https://bugs.launchpad.net/bugs/747611
Title:
[natty] two-finger-scroll stopped working after today's update
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