21.3 xfce is there a way to cut blue at night from display [Solved]

[davidy]

Had the same problem last December. Installed f.lux from github, and then redshift via synaptic. I get 2 options for the same purpose in the same gui but I chose f.lux simply because it made it happen.
F.lux:

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cd /tmp
git clone "https://github.com/xflux-gui/fluxgui.git"
cd fluxgui
./download-xflux.py

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sudo ./setup.py install --record installed.txt

Now install redshift via synaptic then just run it with:

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fluxgui

Set lat/lon etc. in preferences. Been working perfect ever since.

Finally figured out how to enter code

I notice there is no settings from the redshift-gtk tray icon. Anyways, I removed the redshift-gtk completely in synaptic and removed the redshift startup item in Session and left the flux startup item in session alone making sure it pointed to "fluxgui". Fluxgui gives you the abiity to easily set the thing and after setting your lat/lon just pick a nighttime color you prefer and you're done.

[FinalFox420]

I also recommend xsct.
Unbeatable simplicity.

'apt info xsct'

The xsct tool sets the color temperature of the screen via xrandr like
redshift. Unlike redshift, it is only 80 lines of C and will not change
the screen temperature automatically.