Pwr

This is a program designed for laptops. It can easily switch between power-saving and performance modes using simple, shorthand commands. It will also restart the current display manager unless the -n flag is selected, allowing for all changes to take effect.

What it switches (if available):

• CPU Performance Governor (powersave vs. performance)
• NVIDIA PRIME GPU (intel vs. nvidia)
• Wireless card power-saving state (on vs. off)

Usage

To switch into Performance mode:

pwr perform

To switch to power-saving mode:

pwr powersave

To toggle:

pwr toggle

And to check the current state (gives perform or powersave):

pwr query

You can also use the shorthand pe for performance, ps for power-saving, to for toggle, and qu for query.

If you don't want your display manager to restart, add the -n flag on the end of the command.

Building and Installing

From Binary Releases

Check out the Releases. You can either run the .sh-based installer (a self-extracting archive) as root, or unpack the .tar.gz file and install its contents manually. Be aware that the installer and tarball don't automatically set the script as setuid - you may have to add the +s flag manually.

From Source

Ensure you have git and cmake installed, as well as an appropriate C compiler such as gcc.

git clone https://github.com/emctague/pwr
cd pwr
mkdir build
cd build
cmake ..
make
make install

You can also download a tarball of the latest release and use that instead of the git repo.

Copyright and License

Copyright 2018 Ethan McTague.

This program is licensed under the MIT license. See LICENSE for full license text.