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From the Redshift project web page:

Redshift adjusts the color temperature of your screen according to your surroundings. This may help your eyes hurt less if you are working in front of the screen at night. This program is inspired by f.lux.
  • Redshift does not support Wayland since it offers no way to adjust the color temperature. [1]
  • GNOME provides features like Redshift out-of-the-box and has Wayland support.



Install the redshift package. Alternatively, install the redshift-minimalAUR package, for a version with minimal dependencies.


The redshift-gtk command is provided by the redshift package. Redshift-GTK provides a system tray icon for controlling Redshift and requires the following packages to be installed: python-gobject, python-xdg, and gtk3.


Another GTK application is redshiftgui-binAUR and alternative Qt solutions available are redshift-qtAUR, redshiftconfAUR or plasma5-applets-redshift-control-gitAUR.


Redshift will at least need your location to start, meaning the latitude and longitude of your location. Redshift employs several routines for obtaining your location. If none of them works (e.g. none of the used helper programs is installed), you need to enter your location manually: For most places/cities an easy way is to look up the wikipedia page of that place and get the location from there (search the page for "coordinates").


There are several options to have redshift automatically started:

  • By adding a shell script with the contents redshift &> /dev/null & in /etc/X11/xinit/xinitrc.d/, and then make it executable with chmod +x
  • By adding pgrep redshift &> /dev/null || redshift &> /dev/null & to ~/.xinitrc if you are using startx
  • By using the provided systemd service unit files. Be careful: the service can only be started in user mode, see systemd/User#Basic setup. Two service files are provided: /usr/lib/systemd/user/redshift.service and /usr/lib/systemd/user/redshift-gtk.service. Activate only one of them depending on whether or not you want the system tray icon. The DISPLAY environment variable needs to be configured. See systemd/User#DISPLAY and XAUTHORITY.
  • By right-clicking the system tray icon when redshift-gtk or plasma5-applets-redshift-control is already launched and selecting 'Autostart'.
Note: The redshift services files contains Restart=always so the service will restart infinitely (see systemd.service(5))
  • By using your preferred window manager or desktop environment's autostart methods. For example in i3, the following line could be added to the config file: exec --no-startup-id redshift-gtk. On other desktop environments, Desktop entries inside ~/.config/autostart can be used.

Quick start

Tip: You can get the coordinates of a place with

To just get it up and running with a basic setup, issue:

 $ redshift -l LAT:LON

where LAT is the latitude and LON is the longitude of your location.

Automatic location based on GPS

You can also use gpsd to automatically determine your GPS location and use it as an input for Redshift. Create the following script and pass $lat and $lon to redshift -l $lat;$lon:

#gpsdata=$( gpspipe -w -n 10 |   grep -m 1 lon )
gpsdata=$( gpspipe -w | grep -m 1 TPV )
lat=$( echo "$gpsdata"  | jsawk 'return' )
lon=$( echo "$gpsdata"  | jsawk 'return this.lon' )
alt=$( echo "$gpsdata"  | jsawk 'return this.alt' )
dt=$( echo "$gpsdata" | jsawk 'return this.time' )
echo "$dt"
echo "You are here: $lat, $lon at $alt"

For more information, see this forums thread.

Manual setup

Redshift reads the configuration file ~/.config/redshift/redshift.conf, if it exists. However, Redshift does not create that configuration file, so you may want to create it manually. See redshift.conf.sample.

Note: There seems to be a bug in Redshift that causes the transition option in the configuration file to not work as described: Instead of handling the transition between day and night it only changes the transition between application start-up and shutdown (and delay the latter as a consequence). See the talk page and the issue on the Redshift project page for more information.

Use real screen brightness

Redshift has a brightness adjustment setting, but it does not work the way most people might expect. In fact it is a fake brightness adjustment obtained by manipulating the gamma ramps, which means that it does not reduce the backlight of the screen. [2]

Changing screen backlight is possible with redshift hooks and xorg-xrandr and xorg-xbacklight but, please see Backlight#xbacklight as there are some limitations and you may have to find another method of controlling the backlight depending on your hardware.

You need to create a file in ~/.config/redshift/hooks and make it executable. You can use and edit the following example:

$ mkdir -p ~/.config/redshift/hooks

Create and adjust the following script:


# Set brightness via xbrightness when redshift status changes

# Set brightness values for each status.
# Range from 1 to 100 is valid
# Set fade time for changes to one minute

case $1 in
		case $3 in
				xbacklight -set $brightness_night -time $fade_time
				xbacklight -set $brightness_transition -time $fade_time
				xbacklight -set $brightness_day -time $fade_time

Make it executable:

$ chmod +x ~/.config/redshift/hooks/

Restart the redshift.service user to apply changes.

Check the service status as it should not contain the following message:

redshift[..]: No outputs have backlight property


Screen 1 could not be found

Locate configuration-file "redshift.conf" in your distribution and change "screen 1" to "screen 0"

Left/right clicking the tray icon doesn't work

Install libappindicator-gtk3. See [3] and [4]

Failed to run Redshift due to geoclue2

Note: Prior to apply the method below, close redshift-gtk and restart the geoclue service. Sometimes the location service fails due to e.g. connection established after the location service.

If using GNOME, you can also toggle Location Services to "On" in "Settings -> Privacy"

By default, the geoclue2 configuration files does not allow Redshift access. In order to allow access, add the following lines to /etc/geoclue/geoclue.conf


Redshift temporarily resets using some wine apps that reset gamma values

If you notice that using some wine apps, redshift seems to reset temporarily upon launch, or adjusting settings, or etc, then there is a useful registry key that seems to alleviate this. See [5] and [6]. Set or create the string value

HKEY_CURRENT_USER\Software\Wine\X11 Driver
using the registry editor, or import/set it otherwise.

See also

sctAUR || sctAUR