MacOS 13.4 Ventura - External Monitor no longer detected. Worked until the update to 13.4

Congratulations, Apple, MacOS 13.4 has completely eliminated my ability to use an external display. Up until the 13.4 update, I was using an external display to extend my video across the MacBook display and the external display. No longer since 13.4.

I have now tried three different USB Type-C docking stations that I know have worked in the past, and none of them will connect to my external monitor. What is going on?

MacBook Pro 13″, macOS 10.15

Posted on May 19, 2023 6:55 AM

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93 replies

pkdey

Level 1

8 points

Aug 8, 2023 3:41 PM in response to Ken_dev

This worked.

After the Ventura update, my M1 macbook pro had resolution issues with my 5K 34inch LG (connected through thunderbolt) and my Caldigit ts4 dock. At first, I thought it was the dock or the connecting cables. But unplugging the monitor and resetting it + deleting previously stored monitor display profiles on macbook, solved it.

Aug 8, 2023 7:09 PM in response to nehpyh nehpyh

My external Apple Display was working under Ventura 13.4 but just did the 13.5 update and now I have no external monitor working. None of previous mentioned solutions seems to fix it.

keizer27

Level 1

4 points

Aug 9, 2023 2:01 AM in response to pkdey

How did you deleted the stored display profile?

Can you explain it, the steps you did, pls?

Thanks

MacOS 13.4 Ventura - External Monitor no longer detected. Worked until the update to 13.4