Night Shift not working on 2018 Mac Mini with macOS 10.15.2

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Level 1

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Night Shift not working on 2018 Mac Mini with macOS 10.15.2

Have a 2018 mac mini with macOS 10.15.2. The monitor is connected via a Thunderbolt 3 to HDMI cable, and works well. Except for Night Shift. I can enable it, but it isn't working. Moving the slider has no effect. This seems like a pretty significant oversight, or I'm missing something (very likely).

Is there anything I can do to get Night Shift working? I'm using f.lux in the interim, but I'd like the built-in facility for this to work. The monitor is a Dell U2415, if that makes any difference.

Posted on Dec 16, 2019 1:16 PM

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Answer 1

QuickPost

Level 10

103,437 points

Dec 16, 2019 3:59 PM in response to RogerSC

Hello,

Lets try this, create a new administrative user account within System Preferences > Users. Sign out of your primary account and sign into your new user account. Attempt to use Night Shift. If it works than there is a software conflict on your primary user account. If this does not work then it sounds like there might be an operating system problem which would require you to reinstall macOS.

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Answer 2

den.thed

Level 10

91,060 points

Dec 16, 2019 7:35 PM in response to RogerSC

In-between zmclearan’s excellent advice to try a new user account and then reinstalling macOS.

Try > Use safe mode to isolate issues with your Mac - Apple Support

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Night Shift not working on 2018 Mac Mini with macOS 10.15.2

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