TouchPad

Для управления тачпадом используется команда

synclient

Узнать список параметров можно по команде

synclient -l

Включить клик по тапу

synclient TapButton1=1

LXDE

Create a new file named /etc/X11/xorg.conf.d/99-synaptics-overrides.conf.

Then, in your favourite text editor, modify this file as such:

Section  "InputClass"
    Identifier  "touchpad overrides"
    # This makes this snippet apply to any device with the "synaptics" driver
    # assigned
    MatchDriver  "synaptics"

    ####################################
    ## The lines that you need to add ##
    # Enable left mouse button by tapping
    Option  "TapButton1"  "1"
    # Enable vertical scrolling
    Option  "VertEdgeScroll"  "1"
    # Enable right mouse button by tapping lower right corner
    Option "RBCornerButton" "3"
    ####################################

EndSection

For more information on tweaking xorg.conf.d files, please read the man page:

man xorg.conf