Related Article: About the security content of macOS Ventura 13.4

Level 1

28 points

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

Best reply

nehpyh nehpyh

Level 1

68 points

Posted on May 31, 2023 11:36 PM

I am using Mac Studio M1 and I had the same issue after updating to the latest MacOS Ventura 13.4.

My monitor setup: 2x Benq monitors. One connected via HDMI and one via USB-C. USB-C connection is affected.

I tried this and it worked for me.

Disconnect the USB-C monitor from either the monitor or Mac. Keep the HDMI monitor on.
Go to System Setting.
Go to Display.
Select any other resolutions. Return to your preferred resolution.
Re-connect the USB-C to the monitor.

This worked for me.

If you only have one monitor, I guess you have to try other connection/options. I know that HDMI works in this update.

Currently known issue: When web browser is in full screen in either monitor, the other monitor is blacked out. I think this is still unresolved. I do not know how to feedback to Apple and I don't have time for that. Hope Apple can patch it up soon.

Best Regards.

IG: nehpyh

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105 replies

PAPPL

Level 1

15 points

Jun 25, 2023 10:34 AM in response to x23xa

Unplugging AC from monitor helped in my case too. Somethings wrong since 13.4.(1).

mungan

Level 1

8 points

Jun 27, 2023 5:34 AM in response to Gregplo

The solution is actually simple. Plug the Macbook as usual to the screen. Unplug and plug the energy cable of the screen. It worked for me!

Gregplo Author

Level 1

28 points

Jun 27, 2023 6:54 AM in response to mungan

Unfortunately, that did not work for me. I had to shut off the power to the MacBook Pro and Monitor at the power strip and then power it back on for it to clear whatever was causing the issue.

Jun 29, 2023 12:19 PM in response to divinetruth

Cut Apple some slack. Think of all the different hardware manufacturers they have to support... oh wait..

Jul 3, 2023 7:14 AM in response to divinetruth

Hey, Genius. It's called sarcasm. Apple is a notorious company dedicated to developing hardware and software together. Anyone with half a brain and knows a tiny bit about Apple got the joke.

Suzef2

Level 1

12 points

Jul 3, 2023 7:16 PM in response to cpokie

My MacAir Pro screen has just frozen and I can't even type in my password. Any suggestions

Jul 4, 2023 4:08 AM in response to Chris2rer

That was sarcasm?!

You should work on your delivery because we cant see the emotion behind your writing

Jul 5, 2023 11:06 AM in response to Gregplo

Same issue. Apple really needs to have a easy method to roll back updates. DO NOT UPDATE TO 13.4.1 if you use a dock and displaylink to get around the M1/M2 limited monitors situation.

karcevgo

Level 1

8 points

Jul 14, 2023 7:25 AM in response to Gregplo

have a problem with M2 Air & HP34' usb_c*DP. while my M1 Air works fine without any dance

Jul 20, 2023 9:59 AM in response to Gregplo

Same here as many report. Updated to Ventura 13.4.1 and MBP M2 will no longer detect external 4K monitor. I’m using an Anker hub with DisplayPort.

Jul 20, 2023 10:33 AM in response to RichieR00

I believe that Anker hub requires DisplayLink software, is that right? If so, updating DisplayLink is probably all you need.

karcevgo

Level 1

8 points

Jul 21, 2023 10:04 AM in response to Gregplo

changing cable from 8k30hz to 8k60hz which has 32gbps speed solved the issue when m2 air didn't work with hp34'

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

karcevgo

Level 1

8 points

Sep 27, 2023 11:40 AM in response to wwwgh01

My HP has an option of power efficiency in menu. Turned it off and it works fine now. Try to find the same option if your monitor has it

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