ubuntu@ubuntu:~$ xinput
⎡ Virtual core pointer                        id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ VirtualBox mouse integration              id=9    [slave  pointer  (2)]
⎜   ↳ VirtualBox USB Tablet                     id=10   [slave  pointer  (2)]
⎜   ↳ ImExPS/2 Generic Explorer Mouse           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)]
    ↳ Sleep Button                                id=7    [slave  keyboard (3)]
    ↳ Video Bus                                   id=8    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard                id=11   [slave  keyboard (3)]
ubuntu@ubuntu:~$