Blue Light Filter in XFCE (Redshift)

Original forum link: https://forum.qubes-os.org/t/540
Original poster: BBro
Editors: BBro, Bearillo, deeplow, enmus, system
Created at: 2020-09-12 22:36:40
Last wiki edit: 2023-10-30 22:24:38
Revisions: 7 revisions
Posts count: 24
Likes count: 33

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.
You can turn it off again by running killall redshift in a dom0 terminal

*Location is needed to know when actually sun sets for you. To find city longitude and latitude you can use geonames.org Alternatively, use fixed times in the config file; that way you don't need to come up with a location:

[redshift]
temp-day=6400
temp-night=3200
dawn-time=07:00-08:00
dusk-time=21:30-22:30

Automation/Startup

we need to create script ~/.startupscripts/redshift.sh, open dom0 terminal * mkdir .startupscripts * cd .startupscripts * nano redshift.sh * paste:

    #!/bin/sh
    sleep 2
    redshift

save
chmod +x redshift.sh - (this makes script executable)
Add redshift to autostart in xfce settings

Name: Redshift Description: Blue light filter Command: sh /home/USERNAME/.startupscripts/redshift.sh

Documentation

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