External Dell Monitor Goes black randomly throughout the day

I have a 2020 Macbook Pro. When connected to an external Dell monitor it starts to black out for a few seconds intermittently. I have noticed for a while and it seems to increase it's frequency over the course of a day so maybe once an hour then once every 30mins.

Is there a solution to resolve this? It's connection to an HDMI to usbc.

Posted on Aug 5, 2024 8:01 PM

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1 reply

Aug 5, 2024 8:34 PM in response to taniarich

How long is the cable?

I've read that recent versions of macOS are picky about display transmission errors – they don't like to see any, and the monitor reports some, macOS may cut resolution or blank out the monitor in response. A long cable or one that isn't well-shielded may be more likely to result in transmission errors than a short one.

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External Dell Monitor Goes black randomly throughout the day

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