After installing Ubuntu 14.04 I had problem with my touchpad, it was not working until I found the following solution described here: Synaptic touchpad on laptop not working
As mentioned in the link above, I used the following commands:
sudo modprobe -r psmouse
sudo modprobe psmouse proto=imps
then I created the file /etc/modprobe.d/psmouse.conf with the following content...
options psmouse proto=imps
now both my touchscreen and touchpad don't work.
this is the list of my input devices:
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ USB Optical Mouse id=12 [slave pointer (2)]
⎜ ↳ ETPS/2 Elantech Touchpad id=15 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Video Bus id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ Asus WMI hotkeys id=13 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
