work around

[marnout]

Because I had many issues :

1. In the file /etc/systemd/system/asus_touchpad_numpad.service I have commented out the lines
   #StandardInput=tty-force
   #TimeoutSec=5
   #Restart=on-failure
   The first one prevented me from opening other tty consoles (Ctrl-Alt-F#)
2. I disabled the service :
   sudo systemctl disable asus_touchpad_numpad.service
3. I created a shell numpad file that contains:
   sudo systemctl $1 asus_touchpad_numpad.service

So when i want to start the driver I do numpad start and when want to stop it I do numpad stop.
Think you for your driver Mohamed.
Mourad