Ventura 13.2.1 update fails to recognize external display

When my Mac Studio updated to Ventura 13.2.1, it no longer recognized my 27" Apple Thunderbolt Display, although it worked beautifully before the update. "Detect Displays" in the "Displays" tab under System Preferences does not identify my old display, despite its having the same configuration as before the update. Under the "System Report", the old display is not recognized in any of the Thunderbolt/USB4 buses, although my "Studio Display" and an external hard driving using Thunderbolt 2 connections do display and do work. I have tried unplugging-replugging and unconnecting-reconnecting my old monitor and have tried logging-out-logging in and restarting my Mac Studio. All to no avail. It is like the newest system upgrade refuses to recognize the old monitor.

HELP! Any suggestions?

Mac Studio

Posted on Mar 6, 2023 12:20 PM

Top-ranking reply

beamer1423

Level 1

8 points

Posted on Jul 10, 2023 7:43 PM

I am using an Apple Thunderbolt Display 27" with a 2021 MacBook Pro 16" M1 Pro chip and had the same issue not recognizing the display with the attached MagSafe/ Thunderbolt cable that is permanently attached to the monitor, with the Apple Thunderbolt to Thunderbolt 3 / USB-C adapter . However I found that using a separate Apple Thunderbolt cable I had and connecting it to the Thunderbolt port on the back of the display and then the other end into the Thunderbolt 3 adapter, when I connect it to the MacBook Pro it works perfectly. I am running MacOS Ventura 13.4.1. The display works fine this way and allows me to adjust brightness and volume. Speakers and the built in webcam also work fine with no issues.

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42 replies

sluey

Level 1

48 points

Mar 15, 2023 11:27 AM in response to josephandpearson

Same issue here with the 13.2.1 update on a 2018 Mini connected to a Dell U3219Q via thunderbolt.

Mar 31, 2023 12:46 AM in response to josephandpearson

Same Problem here, did an Update on my Mac mini 2023, after the Update HDMI works but iMac as Display connected by USB-C fails. Worked for weeks perfectly :(

dka724

Level 1

12 points

Apr 19, 2023 2:50 PM in response to josephandpearson

same with me. two different monitors. same problem.

Apr 25, 2023 10:07 PM in response to Miche11e_P

Have done all the above and doesn't resolve issue.

It detects only 1 of 2 external monitors.

Sound is working in both external monitors weird but blank screen.

May 17, 2023 10:06 PM in response to 69Igor

what hub did you use?

69Igor

Level 1

8 points

May 18, 2023 6:16 AM in response to wattnow176

some noname like that https://www.amazon.com/Akyga-AK-AD-57-Ports-Adaptor-Splitter/dp/B07TYNT9KP

Jun 13, 2023 8:59 AM in response to sukibean

Did you just update to Ventura 13.4 possibly? Because I did last night and haven't had an issue today - yet.

sukibean

Level 1

9 points

Jun 13, 2023 9:02 AM in response to layoutdeluxe

It hasn’t passed security at my company yet (likely months before I can do that). Hoping that fixes it!

it’s just so weird bc my 10+ year old personal MacBook Pro running Catalina is fine.

tmhayes

Level 1

8 points

Jun 19, 2023 9:02 AM in response to layoutdeluxe

Thank you very much for the response, very useful.

Aug 21, 2023 10:12 PM in response to Miche11e_P

This issue has still not been resolved what is apple doing about it @Miche11e_P this is not an isolated issue and worked perfectly fine before the update we are all in the same boat with this issue

Sep 28, 2023 10:06 PM in response to MegaTraveller

Had exactly the same problem then, it was solved and now, back to it after the Sonoma update.

Mar 31, 2023 6:11 AM in response to MegaTraveller

I was able to fix that for myself. Talked to support, nothing really helped. Removed and plugged in cables, rebooted several times, also save mode and so on, nothing worked.

Checked the iMac against my windows box, that worked perfectly, back against my Mac mini not. :(

Had support on the telephone, and just to switch displays once more to check version of OS on the iMac I tried to switch view by pressing Command + F2. Strongly nothing happened, pressed it another time and I was able to see the iMac desktop.

Pressed the combination for the third time and the Mac mini connected to the iMac display again.

Support and myself have no idea why or how, but I am happy this solved it for me.

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Ventura 13.2.1 update fails to recognize external display