Mac mini running macOS Sequoia 15.5 experiencing brief 2 second blackouts

I have a 2020 Mac Mini running Sequoia 15.5 and use an Asus 4K display which functions perfectly. I just started experiencing brief 2 second blackouts and never experienced this previously. The only change I've made is the addition of the Zoom app, though it doesn't run in the background nor is it launched during bootup. If I restart, it seems to be OK. Is anyone else noticing this? I'm going to uninstall Zoom to see if it makes any difference. Thanks

[Re-Titled by Moderator]

Original Title: Periodic short display blackouts with 15.5

Posted on Jun 22, 2025 04:38 PM

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20 replies

Old Toad

Level 10

214,296 points

Jun 24, 2025 11:40 AM in response to jontalk1

Thanks for the feed back. I have Zoom installed but haven't used it in a couple of years. I'll try uninstalling it and see if the makes any difference.

jontalk1 Author

Level 1

28 points

Jun 24, 2025 12:24 PM in response to Old Toad

No problem..I've yet to have anymore blackouts since uninstalling

jontalk1 Author

Level 1

28 points

Jun 24, 2025 02:27 PM in response to Old Toad

PS, I highly recommend the use of AppCleaner which is in the App store..it does the best job of removing all files than any I've tried; its a desktop app rather than one that sits with the others

Old Toad

Level 10

214,296 points

Jun 25, 2025 11:43 AM in response to jontalk1

I have to agree. Removed Zoom and all supporting files yesterday and, so far, have had no blackouts. 🤞

Will report back in a couple of days to verify (or not).

Old Toad

Level 10

214,296 points

Jun 27, 2025 10:44 AM in response to jontalk1

No blackouts as of 10:43 am today.

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Mac mini running macOS Sequoia 15.5 experiencing brief 2 second blackouts