xinput mostra:
> ⎡ Virtual core pointer id=2 [master pointer (3)]
> ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer
> (2)] ⎜ ↳ PS/2 Elantech Touchpad id=12 [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)]
> ↳ Power Button id=9 [slave keyboard (3)]
> ↳ HP Truevision HD id=10 [slave keyboard (3)]
> ↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
> ↳ HP WMI hotkeys id=13 [slave keyboard (3)]
> ↳ HP Wireless hotkeys id=14 [slave keyboard (3)]
uname -r
4.2.0-42-generic