Display keeps turning off after 30 seconds no matter what the settings say.

I have my Mac mini connected to two monitors via USB-C cables. Regardless of the settings under Lock Screen, after I lock the computer, 30 seconds later the displays turn off and (I guess) the Mac goes to sleep. Is this a bug or am I missing something?


Mac mini, macOS 14.0

Posted on Oct 5, 2023 3:06 PM

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Question marked as Apple recommended

Sounds like you have missed something in Lock Screen and/or Displays.

see > Set sleep and wake settings for your Mac - Apple Support




Posted on Oct 6, 2023 7:41 AM

17 replies

Oct 7, 2023 5:14 AM in response to Jerry_D

Jerry_D wrote:

I have my Mac mini connected to two monitors via USB-C cables. Regardless of the settings under Lock Screen, after I lock the computer, 30 seconds later the displays turn off and (I guess) the Mac goes to sleep. Is this a bug or am I missing something?

No the Mac does not go to sleep it simply is killing the signal to the display to prevent burn in. This is likely by design and I have the same thing in my set up using lock screen. There is zero to worry about and is actually a good thing. Unless you like having pixels being burned into the screen and your monitor burning energy for an image which likely no one is going to sit and stare at for hours.

Display keeps turning off after 30 seconds no matter what the settings say.

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