No USB Type-C signal MacBook Pro M1 with Monitor Dell U2722DE

On my 14" MacBook Pro running Sonoma 14.5, both the USB-C and HDMI connections respectively to my Dell U2723QE and Dell U2421E monitors lost their connections to the computer. I came across this thread from 2022. It recommends unplugging the monitor(s) for at least five minutes, but it only deals with USB-C connections.

I tried this solution and am happy to report it worked with both the USB-C and HDMI connections.

MacBook Pro 14″, macOS 14.5

Posted on Jul 6, 2024 11:06 AM

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1 reply

a brody

Level 10

85,382 points

Jul 6, 2024 1:50 PM in response to MrPookie

Keep in mind Displays generally get their signal over thunderbolt connections. Not all USB-C cables are built to support the full array of Thunderbolt communication. Make sure the lightning bolt icon is on the connector before assuming it is good for display connectivity.

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No USB Type-C signal MacBook Pro M1 with Monitor Dell U2722DE

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