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After Sonoma 14.4 update USB hub not working on MacBook

I have my MacBook (MacBook Pro 16 M2 Pro) connected to my monitor (Gigabyte M34WQ 34 Inch IPS Ultrawide WQHD (3440 x 1440)) via a thunderbolt 3 cable.

I have my keyboard and mouse connected to the USB ports in my monitor.


After updating, my keyboard and mouse are no longer being detected on my MacBook.

Before updating, it was working fine.


I can't find anything online about this issue


Can anyone help?


thanks


[Re-Titled by Moderator]

MacBook Pro 16″, macOS 14.4

Posted on Mar 8, 2024 5:39 AM

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Question marked as Top-ranking reply

Posted on Mar 8, 2024 8:16 PM

I had the same issue with an LG monitor connected by USB3 -- the mouse plugged into the USB hub on the monitor didn't work after the 14.4 upgrade.


Rebooting, reconnecting wires, etc, didn't help.


However, this worked:


  1. System Settings->Privacy&Security->Allow accessories to connect->Ask every time
  2. Turn off monitor (at the wall is best) and disconnect it
  3. Reboot
  4. Reconnect the monitor then turn it on.


At this point I got a popup asking if I agreed to the assessory and I answered yes. Since then the mouse works fine. Hopefully it will stay that way.

109 replies

Mar 13, 2024 2:24 AM in response to snowwwwwyx

I got Sonoma to prompt the "Allow accessories to connect" by


  1. open the laptop lid
  2. disconnect the display usb-c cable
  3. change the "Allow accessories to connect" setting to "always ask"
  4. logout the user
  5. log back in
  6. reconnect the display usb-c cable
  7. now Sonoma should prompt for the permission


I also noticed, that if I then close the laptop lid, disconnect the cable and plug it back in, Sonoma forgets the setting and the USB hub stops working again.

Mar 12, 2024 12:52 PM in response to snowwwwwyx

Same Issue here. I have a MacBook Pro M2 Pro and a Dell Monitor with a built in usb hub. Mac and Monitor connect via USB-C connector. Until Sonoma 14.4 it all worked fine. After 14.4, every time my Mac is put to "sleep" when it powers back up, the external monitor does come back up but any usb devices connected to the monitor hub get lost. Power cycling the monitor, or unplugging and plugging the monitor into the Mac does not help.


While my MacBook Pro does not see the devices, if I unplug and then plug the monitor into my MacBook Air running Ventura, all devices come online. Same with my windows laptop. Which leads me to believe that this is clearly a bug introduced in Ventura 14.4. Please fix.

Mar 27, 2024 5:51 AM in response to snowwwwwyx

English:

Solution for USB Port Issues After MacOS Update (14.4.1) with External Monitor


Hello everyone,

I wanted to share my experience after recently updating to MacOS 14.4.1, hoping it might help others facing similar issues.


Problem:

Following the update, not a single USB port on my LG27UN880P-B monitor, which had a Logitech Bolt USB receiver for my mouse connected, worked. Despite lengthy discussions with Apple Support and numerous attempts to solve the issue (resetting the monitor, resetting the mouse, safe boot, restarting, reconnecting cables), the problem persisted. Interestingly, the USB ports also failed when connected to a Windows laptop, which had never been an issue before.


Solution:

As a last resort, I unplugged the monitor's power cable while it was on and displaying an image. Surprisingly, this made the USB hub work perfectly again.

It appears that the update may have caused a surge or similar fault at the USB ports, which could be fixed by simply unplugging the monitor's power cable while operational.


So, simply trying to unplug the cable while the monitor is operating... was the only thing that helped in my case.


Future Solution:

To avoid future issues, I strongly recommend disconnecting all cable connections to external devices like hubs and monitors before performing system updates and closing all open applications.


I hope this solution can assist others experiencing similar problems after an update.



German:

Lösung für USB-Port-Probleme nach MacOS-Update (14.4.1) mit externem Monitor


Hallo zusammen,

ich wollte meine Erfahrung teilen, die ich kürzlich nach dem Update auf MacOS 14.4.1 gemacht habe, in der Hoffnung, dass es anderen helfen könnte, die ähnliche Probleme haben

Problem:

Nach dem Update funktionierte kein einziger USB-Port meines LG27UN880P-B Monitors mehr, an dem ein Logitech Bolt USB-Empfänger für meine Maus angeschlossen war. Trotz langer Gespräche mit dem Apple Support und zahlreicher Versuche, das Problem zu beheben (Monitor zurücksetzen, Maus zurücksetzen, sicherer Start, Neustart, Kabel ab- und wieder anstecken), blieb das Problem bestehen. Interessanterweise hatten die USB-Ports auch bei Anschluss an einen Windows-Laptop keinen Erfolg, was zuvor nie ein Problem war.


Lösung:

Als letzten Ausweg zog ich das Stromkabel des Monitors, während er eingeschaltet war und ein Bild zeigte, direkt am Monitor ab. Überraschenderweise funktionierte danach der USB-Hub wieder einwandfrei.

Es scheint, als hätte das Update möglicherweise eine Überspannung oder einen ähnlichen Fehler an den USB-Ports verursacht, der durch das einfache Abziehen des Stromkabels des Monitors im Betrieb behoben werden konnte, nicht aber durch einen Reset auf Werkseinstellungen.


Also einfach mal probieren das Kabel im Betrieb des Monitors zu ziehen...half bei mir als Einziges.


Lösungsvorschlag für die Zukunft:

Um zukünftige Probleme zu vermeiden, empfehle ich dringend, vor der Durchführung von Systemupdates alle Kabelverbindungen zu externen Geräten wie Hubs und Monitoren zu trennen und alle offenen Anwendungen zu schließen.


Ich hoffe, diese Lösung kann anderen helfen, die ähnliche Probleme nach einem Update erleben.

After Sonoma 14.4 update USB hub not working on MacBook

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