Screen red filter

Someone

Someone

I have read and watched some stuff about how artificial light at night and especially blue and led is harmful to human biorhythms and body, so i put an extension to my browser (nightshift lux control) to make the screen less blue and more red. Is there something similar in the base system to control screen hue, tint, colore etc? Ideally a config file about how the screen renders signal. Thanks.
PS: for screen brightness i have seen the backlight command
 
There is no tool with that inherent purpose directly built-in to the system. However accessibility/gammastep can be used to do this. Gammastep works on both xorg and wayland. Gammastep can be made to progressively change the screen temperature (as in how "red", or rather "non-blue" it is) progressively based on the time of day, or it can also just be set to use fixed constant temperatures, where it will only go by the values you've set, and will remain at said temperature until you kill gammastep.
 
Someone said:
Is there something similar in the base system
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Think of yourself as the base system and wear blue-light blocking glasses :cool: (they work any OS, device, even rooms with LEDs)

I got cheap frames and a "High-Index Blokz+ Tints" option for blue-light, along with rose tint for extra-warm that work great:
1.PNG
 
Espionage724 said:
Think of yourself as the base system and wear blue-light blocking glasses :cool: (they work any OS, device, even rooms with LEDs)

I got cheap frames and a "High-Index Blokz+ Tints" option for blue-light, along with rose tint for extra-warm that work great:
View attachment 25318
Click to expand...
Dr Jack Kruse said sunglasses are an ongologists best friend because the body gets tricked about light conditions when the eyes are covered. As i uderstand it, the disparency between the light getting to the eyes and skin is the problem. Also i avoid artificial stuff on my body.
View: https://www.youtube.com/watch?v=T8hazN0xvg8
 
I see, while the human biorythm says: "day = awake, night = sleep" you want to filter light while staying awake at night to not disturb your biorythm. :-/
 
Maturin said:
I see, while the human biorythm says: "day = awake, night = sleep" you want to filter light while staying awake at night to not disturb your biorythm. :-/
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At winter, especially in high latitude countries, a human sleeps less hours than when its dark. The rest in the past was social gatherings around fires, reading with candles etc. Of course using computers at night is not fully optimal, but using a low light, reddish spectrum environment (with woodfire/candles/incadescent bulb if possible) and a computer with a red shift filter is a step to the right direction from when we are now.
 
OK. That's a point.
As others mentioned you could try to deal with the colorsettings of monitor (some are also capable to create and save individual profiles), and your X settings (maybe create a day- and nightprofile, maybe change them by time and date, maybe there already is something like that...[it is - even not for FreeBSD; but you're not the only one having this need] even Windows have a night mode [don't know if this does the job really]) - but I fear there still will be some rest light of a color, you don't want; and besides you need quite a while to see if it has a satisfying effect, you are fumbling with your colorsettings - not really perfect.

Also there are special monitors availble, like e.g. BenQ's RD series. Or NVIS compatible monitors, which might be not easy to buy, pretty expensive, and maybe not trivial to connect to your system, since those are for military equipment.

Besides the idea by Espionage724 using glasses, which was easiest, most flexible solution, and make one look cool somehow, (and there are lot's of glasses available for filtering certain colors),
I remember back in the days of tube monitors there have been colored screens to be placed before the monitor.
I can't find any - don't know if something like that is already to buy, but in your place I simply would try to buy some transparent, colored film, cut it so the size fits the monitor, and attach it to it with some tape, so you can flip it. If this works - a high quality film, even glass not distorting you screen's image too much, can be not easy to get - you can also work out a more sophisticated solution then.
 
Maturin said:
OK. That's a point.
As others mentioned you could try to deal with the colorsettings of monitor (some are also capable to create and save individual profiles), and your X settings (maybe create a day- and nightprofile, maybe change them by time and date, maybe there already is something like that...[it is - even not for FreeBSD; but you're not the only one having this need] even Windows have a night mode [don't know if this does the job really]) - but I fear there still will be some rest light of a color, you don't want; and besides you need quite a while to see if it has a satisfying effect, you are fumbling with your colorsettings - not really perfect.

Also there are special monitors availble, like e.g. BenQ's RD series. Or NVIS compatible monitors, which might be not easy to buy, pretty expensive, and maybe not trivial to connect to your system, since those are for military equipment.

Besides the idea by Espionage724 using glasses, which was easiest, most flexible solution, and make one look cool somehow, (and there are lot's of glasses available for filtering certain colors),
I remember back in the days of tube monitors there have been colored screens to be placed before the monitor.
I can't find any - don't know if something like that is already to buy, but in your place I simply would try to buy some transparent, colored film, cut it so the size fits the monitor, and attach it to it with some tape, so you can flip it. If this works - a high quality film, even glass not distorting you screen's image too much, can be not easy to get - you can also work out a more sophisticated solution then.
Click to expand...
Good idea the colored film over the screen! Thanks
 
It may take a bit of effort, but I think using any built in controls of the monitor is the easiest thing to do. You'll need to do a bit of detective work to figure out how "color temp" and the controls get you what you want. You may also be able to save that setting as a custom, which means you can flip back and forth as needed.
 
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