To get tapping working with your touchpad/trackpad, you can try the following methods:
from Arch wikihttps://wiki.archlinux....
add these lines and save
But that didn't do much for my Compaq CQ40's touchpad, so I put this in a Terminal..
and tried tapping, good result
added it to ~/.config/lxsession/LXDE/autostart or ~/.config/openbox/autostart with,
@synclient TapButton1=1 TapButton2=2 TapButton3=3
adapted from http://forums.debian.net...
make a script /usr/bin/synstart containing..
make it executable and add a line to autostart..