How to enable Night light mode in Ubuntu 17.10

Lessen the strain on your eyes while working at Night

Night light mode has been around for sometime in smartphone and tablets. It has entered into some Linux distros as a feature enabled by default settings. GNOME desktop environment got the Night light mode from GNOME 3.24 onwards, which got released around a year ago..

Now that Ubuntu 17.10 carries GNOME as the default desktop environment, one would expect the latest Ubuntu installation to include Night light mode built-in. Actually, it is, except the feature doesn’t come enabled by default settings. It needs to be turned on manually. Hence this guide.

What is Night Light Mode?

In a nutshell, Night light mode lessens strain on your eyes while viewing the computer at night or in the dark. The computer’s display will dim brightness and also blue color. Blue light is known to cause sleep hormones imbalance in our body, meaning harder to fall asleep. With the night light mode, your screen will look red or amber, which has been proven to help your eyes adjust to night vision more smoothly, leading to better sleep.

Activating Night Light Mode in Ubuntu 17.10

Step 1) Go to ‘Activities’ and launch ‘Settings’ app.

Step 2) Click ‘Devices’ and then ‘Displays’ in the left pane.

Step 3) Click ‘Night Light’.

Step 4) Move the toggle switch to ‘ON’ position. By default settings the night light mode will turn ON when you use your PC between Sunset and Sunrise based on your Ubuntu’s clock time. Optionally, you can enter manual time if needed.

Night Light enabled
Night Light enabled

During the mode, you can quickly access/turn off or manage the settings via Control Center.

Control Center - Quick Night Mode Settings
Control Center – Quick Night Mode Settings

That’s it!


Kiran Kumar
Hi there! I'm Kiran Kumar, founder of I'm an avid Linux lover and enjoy hands-on with new promising distros. Currently, I'm using Ubuntu as a daily driver and run several other distros such as Fedora, Solus, Manjaro, Debian, and some new ones on my test PC and virtual machines. I have a day job as an Engineer, and this website is one of my favorite past time activities, especially during Winter ;). When I'm not writing for FOSSLinux, I'm seen biking and hiking on scenic trails. I hope you enjoy using this website as much as I do writing for it. Feedback from readers is something that inspires me to do more and spread Linux love!. If you find a time, drop me an email or feedback from the 'Contact' page. Or simply leave a comment below if you found this article useful. Have a good day!


  1. To change how red night-light makes the screen you will need to edit the setting in dconf-editor /org/gnome/settings-daemon/plugins/color/

  2. is there anything like this for peppermint 8, that i can manually control rather than just choosing itself based on time of day like the others ? i usually have the curtains drawn so i need to be able to set it myself regardless of time of day.

  3. Hi
    My night light works most of the time but randomly turns itself off so I get a flash of bright light all of a sudden,to fix this I have to Disable until tomorrow & then click on Resume,this also occurs after the PC has been on sleep.How can I fix this,I’ve googled but this problem has been solved on older versions of ubuntu,not on Ubuntu 17.10.Would be grateful for any help,because otherwise I have to wear sunglasses for evening PC use =S


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