Package:Synaptics

Synaptics

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Synaptics is the driver for laptop touchpad mice.

   /etc/portage/make.conf

INPUT_DEVICES="synaptics evdev"

Your system should have a /etc/X11/xorg.conf.d directory. If there isn't one create it:

root # mkdir /etc/X11/xorg.conf.d

   /etc/X11/xorg.conf.d/50-synaptics.conf

Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
        Option "VertEdgeScroll" "on"
        Option      "CircularScrolling"         "off"
        Option      "VertScrollDelta"          "-111"
        Option      "HorizScrollDelta"         "-111"
        Option      "TapButton1"       	          "1"
EndSection

Invert Scroll

   /etc/X11/xorg.conf.d/50-synaptics.conf

Section "InputClass"
...
        Option      "VertScrollDelta"          "111"
...
EndSection

Circular Scroll

Entire trackpad outline is a scroll wheel:

   /etc/X11/xorg.conf.d/50-synaptics.conf

Section "InputClass"
...
        Option "CircularScrolling" "on"
        Option "CircScrollTrigger" "3"
...
EndSection