Install Laptop Mode Tools 1.67 on Ubuntu 15.04 and Ubuntu 14.04, via PPA. Laptop Mode Tools is a laptop power saving package for Linux systems.
Laptop Mode Tools allows you to extend the battery life of your laptop, in several ways. It is the primary way to enable the Laptop Mode feature of the Linux kernel, which lets your hard drive spin down. In addition, it allows you to tweak a number of other power-related settings using a simple configuration file. It can also be configured to tweak all sorts of other power-related things.
The core feature of Laptop Mode Tools is that it controls the “laptop mode” feature of the Linux kernel, which prevents disk accesses and allows hard drives to spin down for longer periods of time. In addition, Laptop Mode Tools can tweak things like readahead settings, hard drive power management settings, CPU frequency scaling settings, CPU throttling settings, DPMS settings, terminal blanking settings, and LCD brightness settings. In addition, it can automatically start/stop services based on whether you’re working on battery or on wall power, and it can automatically hibernate your computer when it is low on battery power.
Install Laptop Mode Tools 1.67
Open Terminal and run the following commands to install Laptop Mode Tools 1.67 on Ubuntu 15.04 and Ubuntu 14.04, via PPA.
$ sudo add-apt-repository ppa:ubuntuhandbook1/apps
$ sudo apt-get update
$ sudo apt-get install laptop-mode-tools
Once installed, open the Laptop Mode Tools from Ubuntu Dash (type laptop mode tools and click on the icon. Id you wish to access the configuration file, run the command:
$ sudo lmt-config-gui
Uninstall Laptop Mode Tools 1.67
If you are not happy with the Laptop Mode Tools, run the following command to uninstall and remove the laptop-mode-tools from Ubuntu:
$ sudo apt-get remove laptop-mode-tools
Please note that the same installation instructions should work on Ubuntu Derivatives.