Introduction

This guide will help you to quickly configure blue light filter in Qubes OS with XFCE desktop environment.

Redshift

Installation

type sudo qubes-dom0-update redshift in dom0 terminal and confirm installation by y

!

Remember that installing anything in dom0 is not recommended for security reasons

Configuration

Create confiig file - dom0 terminal: * cd .config * nano redshift.conf You will create an empty file in path ~/.config/redshift.conf. Here you have to set values: your location*, Day/Night Color. Here is explained sample with more functionality. Basic configuration looks like:

    [redshift]
    temp-day=6400
    temp-night=3200
    adjustment-method=randr
    location-provider=manual

    [manual]
    lat=xx.xxxxx
    lon=xx.xxxxx

Where xx.xxxxx are my city latitude and longitude

• Save this configuration file
• Type redshift in dom0 to start the program. It will load previously saved configuration.

*Location is needed to know when actually sun sets for you. Without that parameter, redshift may not work. To find city longitude and latitude you can use geonames.org

Automation/Startup

Add redshift to autostart in xfce settings

Name: Redshift
Description: Blue light filter
Command: sleep 7 %% redshift

Documentation

• http://jonls.dk/redshift/
• https://github.com/jonls/redshift
• https://wiki.archlinux.org/index.php/Redshift

If You want to copy this to the Qubes OS documentation, sure 🙂 it'll be faster to find.