$ dpkg -l |grep libxi6 ii libxi6 2:1.1.3-1ubuntu4 X11 Input extension library
$ dpkg -l |grep xinput ii xinput 1.3.0-1ubuntu3 Runtime configuration and test of XInput dev
$ dpkg -l |grep libxi6
ii libxi6 2:1.1.3-1ubuntu4 X11 Input extension library
$ dpkg -l |grep xinput
ii xinput 1.3.0-1ubuntu3 Runtime configuration and test of XInput dev