Lubuntu 18.10 How to activate tap to click
this works for me
https://wiki.archlinux.org/index.php/Libinput#Touchpad_configuration
create:
/etc/X11/xorg.conf.d/30-touchpad.conf
content:
Section "InputClass"
Identifier "touchpad"
Driver "libinput"
MatchIsTouchpad "on"
Option "Tapping" "on"
EndSection
and finally
reboot
Activating tap-to-click with xinput via command line
Find your device id (in my case 13 bellow ):
# xinput list
Look for:
↳ ETPS/2 Elantech Touchpad id=13 [slave pointer (2)]
Find the "Tapping" desired option code (in my case 283 bellow):
# xinput list-props 13
Look for:
libinput Tapping Enabled (283): 0
Activate it with "1" using:
# xinput set-prop 13 283 1
List props once more to confirm:
# xinput list-props 13
Look for:
libinput Tapping Enabled (283): 1
Source