Fixing Lenovo touchpads on Ubuntu

I recently moved from Dell Studio to Lenovo's Thinkpad Edge E430 laptop. It is an all-Intel machine and the drivers support is quite good. Initially the touchpad felt over sensitive as the cursor jumped a few pixels on finger lifts. Luckily, it is a common touchpad issue on Lenovo machines and easily fixable.

Create the following config file in /usr/share/X11/xorg.conf.d/50-thinkpad-touchpad.conf (create xorg.conf.d directory if it doesn't exist):

Section "InputClass"
        Identifier "touchpad"
        MatchProduct "SynPS/2 Synaptics TouchPad"
        Driver "synaptics"
        # fix touchpad resolution
        Option "VertResolution" "100"
        Option "HorizResolution" "65"
        # increment noise cancellation factor
        Option "HorizHysteresis" "50"
        Option "VertHysteresis" "50"
EndSection

Update for ArchLinux: file path /etc/X11/xorg.conf.d/50-thinkpad-touchpad.conf

Section "InputClass"
        Identifier "touchpad"
        MatchProduct "SynPS/2 Synaptics TouchPad"
        Driver "synaptics"
        # fix touchpad resolution
        Option "VertResolution" "100"
        Option "HorizResolution" "65"
        # disable synaptics driver pointer acceleration
        Option "MinSpeed" "1"
        Option "MaxSpeed" "1"
        # tweak the X-server pointer acceleration
        Option "AccelerationProfile" "2"
        Option "AdaptiveDeceleration" "16"
        Option "ConstantDeceleration" "16"
        Option "VelocityScale" "128"
EndSection

Different Lenovo laptops may require different tweaking. Above works best for Edge series. Other configs are available here.