Hi- I'm running version 22.04 and have sleep issues because of the blue light radiation if I use my computer before bedtime. I tried using Redshift in Terminal but the screen remains unchanged.
jim@jim-Latitude-E5530-non-vPro:~$ redshift
Trying location provider geoclue2'... Using provider geoclue2'.
Could not connect to wayland display, exiting.
Failed to start adjustment method wayland.
Trying next method...
Using method `randr'.
Waiting for initial location to become available...
Location: 39.97 N, 83.00 W
I haven't used this but here it is:
setting RedShift from command line
The GUI of RedShift has very limited options, and you can not set the color temperature in a permanent way. However, Redshift also has some command line options: open in a terminal window: redshift -h to see the options.
Simply running the command:
redshift -O 3700
Will set your screen permanently to "night".
Neutral temperature is:
redshift -O 6500
What I do is put a text file called < redshift.conf > in hidden folder< .config > for each user, I use redshift day and night, so my temps will be different from yours. Also my location is different