powertop software package provides diagnose issues with power consumption and management, 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 powertop
powertop is installed in your system.
Make ensure the powertop package were installed using the commands given below,
$ sudo dpkg-query -l | grep powertop *
You will get with powertop package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Utilities |
| Package | powertop |
| Version | 2.5-1ubuntu1 |
| Description | diagnose issues with power consumption and management |
| Sub Section | Utils |