input-modules-4.4.0-21-generic software package provides Support for various input methods, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install input-modules-4.4.0-21-generic
input-modules-4.4.0-21-generic is installed in your system.
Make ensure the input-modules-4.4.0-21-generic package were installed using the commands given below,
$ sudo dpkg-query -l | grep input-modules-4.4.0-21-generic*
You will get with input-modules-4.4.0-21-generic package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | debian-installer udeb packages |
| Package | input-modules-4.4.0-21-generic |
| Version | 4.4.0-21.37 |
| Description | Support for various input methods |
| Sub Section | Debian-installer |