imwheel software package provides program to support non-standard buttons on mice in Linux, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install imwheel
imwheel is installed in your system.
Make ensure the imwheel package were installed using the commands given below,
$ sudo dpkg-query -l | grep imwheel *
You will get with imwheel package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Utilities |
| Package | imwheel |
| Version | 1.0.0pre12-9 |
| Description | program to support non-standard buttons on mice in Linux |
| Sub Section | Utils |