Questions tagged [night-light]

For use with the "Night Light" feature found in the GNOME display settings menu. Can also be used for external applications that serve the same purpose, such as Redshift, f.lux, etc.

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One of the screen has purple filter

I'm using 3 screen with my computer. My OS is Ubuntu 22.04.3 LTS. But one of the screen has purple filter. I already tried to turn on/off "night light", but didn't work. how can close this ...
Bilgi Alp's user avatar
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1 answer
42 views

Meaning of night light color temperature

Does "night light" block all of the blue lights? or is it related to the color temperature? What is the purpose of color temperature? Does color temperature gradually block the blue lights, ...
Towsif Ahamed Labib's user avatar
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Ubuntu 20.04 unable to detect any device that can be color managed

In the Colors section of the Settings, I am seeing this message: Unable to detect any device that can be color managed. Also, I think because of this my night light doesn't work. How can I fix the ...
Amir Arslan Haghrah's user avatar
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Bind a shotcut to temperature color adjusment (night mode activated)

I would like a hotkey/shotcut/keybinding to turn up or down the color temperature of the screen. Since I always have the night light mode enable but trough the day I just change it manually if I can't ...
veet's user avatar
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2 votes
0 answers
86 views

Night light not working with any Nvidia drivers, what can I do?

Recently I approved an update through the snap store, and ever since then the night light doesn't work with any nvidia drivers. I had been using the 515 version, but it's disappeared from the list of ...
enigmatrix's user avatar
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219 views

Unable to Enable Night Light (Blue Light Filter) on External Monitor via Docking Station in Ubuntu 22.04

I am using Ubuntu 22.04 in conjunction with my Docking Station ICY BOX USB-C Docking Station (11-in-1) for 2 Monitors (2x DisplayPort), 4K 60Hz, 6-fach USB 3.0 HUB, Gigabit Ethernet, Audio, Schwarz, ...
crystal's user avatar
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0 answers
32 views

Cannot disable night light

I have fresh installed Ubuntu 22.04.2 LTS. After installation, I noticed that the colors on my monitor changed. I look in the Night Light settings, it's disabled by default, when I turn it on, nothing ...
Yasha Akimov's user avatar
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0 answers
253 views

Screen flickering in Ubuntu 22.04

I have weird screen flickering both with redshift and the night mode in Ubuntu 22.04. Whenever the light starts changing, the screen starts flickering from time to time. This is the sudo lshw -c video ...
AdAstra97's user avatar
1 vote
1 answer
129 views

Dimm my screen light from software while keeping night light

I like night light (build-in setting in my ubuntu 20.04), but it doesn't reduce screen brightess enough. Is there a command / tool I could use to dimm my screen further, while keeping the night light ...
n0tis's user avatar
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0 votes
1 answer
702 views

Night Light not working on one out of three monitor

I am currently on ubuntu 22.04.1. My setup: I have 2 monitors connected to my nvidia gtx 1060 graphics card, one with hdmi and one with dvi, and I have a third display connected to my iGPU with DVI. ...
Luciano's user avatar
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1 vote
1 answer
582 views

How to lower brightness beyond minimum for laptop screen in Ubuntu 22.04?

Problem My laptop's screen remains too bright at night, even at the minimum brightness. Solution I'd like A tool that lets me change brightness beyond minimum brightness. What I've tried already ...
facialrecognition's user avatar
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1 answer
801 views

Night light will still not work on Ubuntu 22.04

I have tried out several solution of this problem described on other posts Making a guest account, checking localization, trying red shift, turning on and off computer Killing the process of night ...
Christie49's user avatar
1 vote
1 answer
477 views

Nightlight not working after upgrade to 22.04

Today I upgrade to Ubuntu 22.04 from 20.04 and the nightlight / bluelight filter isn't working anymore. It shows as turned on in in Settings menu but isn't changing anything. How do I diagnose and/or ...
Baa's user avatar
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3 votes
7 answers
7k views

Night light not working Ubuntu 22.04

Toggling night light and adjusting color temperature has no effect on visual. Setting the night light to Manual schedule and playing with the times did not help. Similar to this question but for ...
JRF's user avatar
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2 votes
3 answers
995 views

Night light turn off automatically after few seconds

In Ubuntu 20.04.3 LTS kernel version 5.16.3-051603-generic. When I turn on night light it gets disabled automatically after few seconds. Like this: Error video What is the cause of problem? Is there ...
Mudit's user avatar
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-1 votes
1 answer
89 views

Is Redshift Application Tracking Our Locations? Or Am I Wrong? What is that means in 'Location' that i have attached in the screen shot?

Redshift Application Info I'm not sure what is that means "Location" in info on Redshift Application. Don't know much about Linux applications. This is why i'm asking from you guys. i'm very ...
Ajax 7657's user avatar
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33 views

duplicate os x night shift settings exactly/approximately for linux/ubuntu night light

Is there anyway to replicate exactly the mac os x "night shift" temperature settings for night light/redshift? Fiddled a lot with the temperature bar, but never comes close to the appearance ...
capn's user avatar
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0 answers
103 views

NIghtlight stopped working ubuntu 20.04

I'm not sure how this happend it just stopped working. I tried enabling location services & installing redshift but neither works. I rather not have location services on anyways but if anyone has ...
yussi's user avatar
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2 votes
1 answer
193 views

Night light icon shows up - but desktop colors don't change

I'm using a manual schedule for night light - and right now I'm within the schedule. Using Ubuntu 20.04 I see the 'Night light' icon in my status bar - and clicking it shows 'Night light is on', but ...
Click Upvote's user avatar
1 vote
1 answer
1k views

How to turn on night light only for a specific monitor in a dual-screen setup

I am using Ubuntu 20.04.02. I have connected an old LG monitor via an HDMI cable. When I turn on the Night light- both the monitors (laptop screen and old LG monitor) are affected (as they should ...
Exter's user avatar
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1 vote
0 answers
524 views

Night light not working in Ubuntu 20.04.2. What can I do now?

Night light is not working in my computer since last boot. Battery was less than 40% when I booted. How can I fix the problem?
Anurag Pathak's user avatar
1 vote
1 answer
394 views

Night Light Not Working on LightDm

I am running Ubuntu 20.04.2, and recently switched my desktop manager from gdm3 to lightdm because the GUI from gdm3 wasn't working properly after some NVIDIA driver problems. So far, lightdm has been ...
Lysanderoth's user avatar
1 vote
0 answers
49 views

How to prevent night light when Steam is running?

How to tweak night light so it doesn't activate when some specific process (like a game or Steam) is running?
Velkan's user avatar
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3 votes
2 answers
497 views

How do I get the color temperature value of Night Light?

How can I get the color temperature value that my Night light has set?
Sammy's user avatar
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3 votes
0 answers
520 views

Night light is not working on joined display on Ubuntu 20.04

I was facing the problem of the night light not working on my laptop since I installed Ubuntu 20.04 but it gets resolved as soon as I restart my system. But now, when I started my system, the night ...
Dhruv Sharma's user avatar
26 votes
6 answers
20k views

Night Light not working in Ubuntu 20.04

Today I realized that Night Light stopped working in my machine. When I try to set it up, nothing happens. See attached gif: I am not sure what's causing it to fail. I don't know if there are any ...
Marco's user avatar
  • 493
4 votes
0 answers
491 views

Night light is not working

I'm on Ubuntu 20.04 and my night light recently stopped working. I did no changes whatsoever, it just stopped working. What could be a possible fix?
Gatxy's user avatar
  • 121
1 vote
2 answers
2k views

Enabling Night Light permanently on Ubuntu 20.04

I always have had problem with setting Night Light's active range on Ubuntu 20.04. The most obvious: 0h - 0h does not work. However setting 8h - 8h at 8.00 o'clock did work until today. Today it does ...
Rich's user avatar
  • 113
1 vote
0 answers
925 views

Night Color and Redshift not working in Kubuntu

I have tried many different things, but neither Night Color in KDE or Redshift works in Kubuntu 20.04. This is a fresh install in with a Nvidia RTX 2070 graphics card and B550 motherboard. I'm not ...
Nicolas Shu's user avatar
0 votes
0 answers
70 views

How to schedule multiple Night Lights?

I just installed standard Ubuntu. I see Settings > Night Light. I see I can set 1 schedule. I'd like to set a more complex schedule with different Color Temperatures at different times of day. ...
Cody Smith's user avatar
0 votes
1 answer
2k views

How to enable Night Light on BSPWM?

I've installed Ubuntu 20.04, which has a night light feature. But now I've installed BSPWM and am using it my window manager. BSPWM seems to ignore the Gnome configs. So how do I enable night light on ...
MaiaVictor's user avatar
7 votes
2 answers
4k views

Night Light not working on external monitor (through DisplayLink dock)

I have a 2019 Dell XPS 13 2-in-1 7390 connected to Dell D6000 docking station and using Dell SE2719HR secondary monitor. The dock uses DisplayLink technology, for all it matters. My Ubuntu version is ...
Томица Кораћ's user avatar
13 votes
2 answers
10k views

How to set automatic night mode in Ubuntu 20.04?

How to set automatic night mode in Ubuntu 20.04? In Ubuntu 19.04 options I have to set the time automatic night mode on.
SNS's user avatar
  • 313
41 votes
6 answers
43k views

How to turn on Night Light Blue Light filter in Ubuntu 20.04

The Night Light filter, also known as Blue Light filter or Color Temperature filter, is a bit hard to find in Ubuntu 20.04. The Night Light tab is now in shown in the title bar, next to the Displays ...
Art Swri's user avatar
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3 votes
2 answers
1k views

Make Ubuntu's Night Light look like Manjaro KDE's Night Color

How can I make Ubuntu's Night Light look like Manjaro KDE's Night Color? I want this because Manjaro's Night Color has a lot more features that allows me to customize the settings the way I want. ...
Student of Science's user avatar
2 votes
0 answers
229 views

night light per monitor

I just installed ubuntu 20.04 and I'm loving night light. But I'm in a dual-monitor setup, and sometimes I'm watching a movie in a screen and browsing the web in the second screen. Yes, it's kind of ...
Bruno Lamps's user avatar
0 votes
1 answer
2k views

Issues with Gnome Night Light and DisplayPort to HDMI cables

I'm having issues getting Gnome's Night Light feature to work correctly with my monitor setup. I've recently switched to a new graphics card that has three DisplayPort outputs (in addition to one HDMI ...
Jonathan Holvey's user avatar
1 vote
1 answer
2k views

Automatically Disable Night Light when fullscreen?

Ubuntu 18.04 Gnome DE When I go fullscreen in stuff like games or youtube, I'd like night light to automatically disable, is this possible? I like to have it always on to reduce eyestrain for every ...
BingBong's user avatar
  • 351
2 votes
1 answer
2k views

How to set up night light mode on one monitor and the second one normal

Just like in the title, how can I set up night light mode on one monitor only? Is it even possible to do such a thing? I'm using Ubuntu 19.10 with basic flavor (I think it's GNOME). Everything is up ...
El Patron Salan's user avatar
0 votes
1 answer
93 views

Something keeps enabling Gnome Night Light

This is driving me nuts. Some time ago I installed redshift and xflux but since they didn't work I uninstalled them. Since then my Night Light keeps enabling itself every now and then after disabling ...
Pithikos's user avatar
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1 vote
2 answers
433 views

Where to get Gnome Night Light source code?

I had thought of asking this question on Stackoverflow but there all the "Night Light" references are for Windows 10 Night Light. Too bad Microsoft and Gnome Developers didn't draw straws for who ...
WinEunuuchs2Unix's user avatar
19 votes
2 answers
3k views

Ubuntu Night Light sunset time incorrect

I'm running 18.04. I have the night light set to run from sunset to sunrise. However, it's been turning on early, multiple hours before sunset and is already to maximum redness before the sun even ...
Ellis Michael's user avatar
57 votes
4 answers
18k views

How do I adjust the hue (intensity) of GNOME Night Light?

I tried to use GNOME Nightlight in Ubuntu 17.04. The settings only allow me to turn it on and adjust the time. Is it possible to adjust the intensity or temperature of the hue? Currently, it's a bit ...
THpubs's user avatar
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