QRedshift

A linux lightweight terminal application to change screen color temperature.

Cinnamon Applet

If you're looking for the cinnamon applet the repository was renamed to QRedshiftCinnamon.

Features

• X11 Support
• Different settings for each monitor
• Wayland Support (Not possible for Cinnamon/Muffin and Gnome/ Mutter)

Usage

Basic: qredshift -t [temperature in Kelvin] -b [bright] -g [gamma]

Reset: qredshift -t

Parameter	Description
-h	Display this help
-v	Show program version
-i	Show display info
-t 6500	Temperature in kelvin
-b 1.0	Brightness from 0.1 to 1.0
-g 1.0	Gamma from 0.1 to 1.0
-xlib	Use Xlib instead of XCB

Xlib and XCB

• Xlib is the traditional, higher-level, and synchronous C library for interacting with the X Window System. It has been the standard for a long time but can be slower due to its synchronous nature.
• XCB (X C Binding) is a more modern, lower-level, and asynchronous replacement for Xlib. It allows for better performance by reducing round-trips to the X server and enabling parallel request processing.
• See: The X New Developer's Guide: Xlib and XCB

Compiling

Debian

sudo apt-get install libxrandr-dev libxcb1-dev libxcb-randr0-dev
make

Arch

sudo pacman -Syu libxrandr libxcb xcb-util
make

Cross Compiling

Debian

sudo apt-get install docker.io 
sudo make docker

Arch

sudo pacman -Syu docker
sudo make docker