Synaptics Touchpad

To use features like circular scrolling1 of a Synaptics touchpad, you need to add the following lines to your /etc/X11/xorg.conf:

Section "InputDevice"
    Identifier   "Synaptics Touchpad"
    Driver       "synaptics"
    Option       "SHMConfig" "true"
    Option       "SendCoreEvents" "true"
    Option       "Device" "/dev/psaux"
    Option       "Protocol" "auto-dev"
    Option       "HorizEdgeScroll" "0"

You also need to add the following line into your ServerLayout section in that file:

    InputDevice "Synaptics Touchpad"

Afterwards you can install the gsynaptics package to manage the settings for your touchpad - incl. enabling the circular scrolling.

  1. It's like a jogdial: just draw a circle with your finger starting from top-center. Clockwise will scroll down, counter-clockwise will scroll up. 

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