I’ll stay focused on our task, but you can certainly check out your Displays settings and tweak as desired. A click on “Displays” and you’ll see this information: Remember, night light will affect the display which is why we know that’s where to move. You can see that it has already jumped to showing the top match for the “blue” search, Bluetooth, but it’s the second match that’s of interest here, Displays. If not, we can try “night”, but turns out that the original search works fine, if a bit cryptically: It’s rather hidden, but look for the magnifying lens icon on the very top left – in the title bar – and click on it.Ī small search window opens up type in “blue” to see if there’s a match for blue light. To do this the way that the cool Linux types would, let’s use the search feature in Settings. To start, launch Settings on your Linux box: It’s also usually found in the Display or Monitors area on your system, and Linux is no different, whether you’re on Ubuntu like I am or prefer a different distro from the dozens that are widely available. Every vendor, predictably, calls it something different, but the concept is the same. What’s amazing to me is that once you’re in night mode, you don’t really notice it, even when the shift is pretty dramatic into warm orange colors.įortunately all the major Linux distributions also support a night mode, night shift or night light mode. MacOS X, Windows, iPhones, Android, they all support this shift and you can adjust it to be gradual and subtle or fairly dramatic. It’s taken many years, but most devices now have support for a ‘night mode’ or ‘night light’ to combat that problem. There’s lots of data to show that blue light sources late at night mess with the melatonin production in your brain and can cause insomnia and restlessness.