Mac mini M4 Pro screen go black randomly

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Level 1

4 points

Mac mini M4 Pro screen go black randomly

My Mac Mini M4 running macOS 15.5 (24F74) is connected to a 27" Apple Thunderbolt display (with the original Thunderbolt cable supplied with the display.

After about 4-months of flawless use, the display began randomly blacking out last month. This is not an issue with the monitor itself or the cables—everything has been tested and works correctly with other computers.

The blackouts are short in duration (3-4 secs), but sudden and extremely frustrating. Apple should be made aware of this issue and investigate it further. Sometimes the computer just restart itself.

Mac mini, macOS 15.5

Posted on Jul 5, 2025 02:34 AM

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Answer 1

den.thed

Level 10

88,786 points

Jul 5, 2025 06:57 AM in response to pmsgp_pmgp

Connect the Thunderbolt display directly to the Mac mini's inner most Thunderbolt port.

Test a different display in the Mac mini's HDMI port or Thunderbolt port using an adapter.

Ref: Connect a display to Mac mini - Apple Support

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Answer 2

Old Toad

Level 10

214,296 points

Jul 11, 2025 11:22 AM in response to pmsgp_pmgp

Do you have the Zoom app installed? For one user in another thread uninstalling Zoom solved their problem.

I was having the same issue with my M4 Mini and had Zoom installed. I uninstalled Zoom and it's supporting files (with the shareware Find Any File) and haven't had a reoccurrence of the blackouts since.

If you have Zoom try uninstalling it and see if there's any improvement.

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Answer 3

pmsgp_pmgp Author

Level 1

4 points

Jul 5, 2025 07:48 AM in response to den.thed

It happens either way, either using any of the front or rear ports, it also happens with an LG Monitor. I

t does not happen when tested the Thunderbolt display with a Mac Book pro (where the LG display is usually connected). Again, note that I have this computer Mac Min Pro m4 since january. These problems only arise some weeks ago becoming everyday more and more frequent (today number of events: 6 times in 7hours of work…)

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Answer 4

den.thed

Level 10

88,786 points

Jul 5, 2025 08:38 AM in response to pmsgp_pmgp

1) Check and disable the Screensaver

2) Set "Turn display off when inactive" to 20 minutes

3) Turn on "Prevent automatic sleeping when the display is off"

4) Backup and schedule a service appointment at your local Apple Store or AASP.

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