I have the same problem on Lenovo Thinkpad Edge 530 and Ubuntu 13.04
The settings from comment #5 did not satisfy me since the cursor speed is pretty much affected (reduced) and increasing the VelocityScale returns back the problem.
After reading the Synaptics manpage I experimented a better configuration, that doesn't affect the speed: there is a
nice feature called NoiseCancellation.
I have created the following config file in /usr/share/X11/xorg.conf.d/50-thinkpad-touchpad.conf:
I have the same problem on Lenovo Thinkpad Edge 530 and Ubuntu 13.04
The settings from comment #5 did not satisfy me since the cursor speed is pretty much affected (reduced) and increasing the VelocityScale returns back the problem.
After reading the Synaptics manpage I experimented a better configuration, that doesn't affect the speed: there is a
nice feature called NoiseCancellation.
I have created the following config file in /usr/share/ X11/xorg. conf.d/ 50-thinkpad- touchpad. conf:
Section "InputClass"
MatchProduct "SynPS/2 Synaptics TouchPad"
Identifier "touchpad"
Driver "synaptics"
# fix touchpad resolution
Option "VertResolution" "100"
Option "HorizResolution" "65"
# increment noise cancellation factor
Option "HorizHysteresis" "50"
Option "VertHysteresis" "50"
EndSection
You can increase the Horiz-/ VertHysteresis even more if you experience still some jumping.