After Sonoma 14.4 update USB hub not working on MacBook

Hello everyone,

macOS Sonoma 14.4.1 just dropped. It fixes the USB hub issues.

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.

I just spoke with a Senior Advisor at Apple about this issue.

My setup: wired mechanical keyboards (I have about a dozen) connected to my iogear GUS432 KVM connected to my LG 38WK95C display's USB hub connected via USB-C to my 14" M1 Pro MacBook Pro.

My flavor of this issue: the other 3 peripherals connected to my KVM - mouse, mic and webcam - all work fine. It's only my keyboards that don't when connected via the KVM. Also, my keyboards work normally when connected via KVM to the other machine on the KVM - a Windows-based Intel NUC. Finally, the few keyboards I have that can also connect wirelessly via Bluetooth work fine over Bluetooth, just not in wired mode via the KVM.

We ruled out the LG display's USB hub by connecting the KVM directly to the MBP so that the connectivity is like-for-like with the Windows machine. Still no dice. I also tried the Settings > Privacy & Security > Allow accessories to connect: always settings change, with no luck.

The SA said that most likely there was a security vulnerability that was addressed in 14.4 and that in such cases where third-party peripherals are at play Apple typically won't send these cases up to Engineering. My options are to either downgrade the machine, which requires a complete reinstall, or to reach out to iogear as manufacturers will need to conduct their own testing and if they find this to be a big enough problem, they have more clout with Apple than you or I as individual customers.

This truly sucks. I've been happily using this KVM for 2 years.

I have exactly the same issue. My specs is Macbook Pro M2 Pro 16/512 connected to an Asus ProArt PA279CV using a dedicated thunderbolt cable. Before the 14.4 update, everything worked fine.

I'm having the same issue on 14.4.1

MacBook Air M1 2020

The same issue with MBP M2Max & Philips monitor. While display itself works, it's built-in usb hub doesn't. Not showing in System information, not connecting any devices, not asking for permission. Tried all suggestions, none helps.

This is a f**ing nightmare.

Since the upgrade, my usb-c hub still works when connected to the M2 macbook Air.

The power goes in, the additional screen works fine via HDMI.

BUT... the Apple USB2 keyboard is not recognized anymore. So I've tried connecting it via an Apple USB-C <=> USB2 adapter and even there it doesn't work!!

I've tried all the suggestions and... it worked, twice! For example yesterday, miracle, things worked. And this morning, not anymore. I don't manage to find out what changed, but today I tried many different procedures again and it won't recognize the keyboard anymore.

This is so annoying that an upgrade creates such issues.

Apple, post a fix NOW!!!

After the M1 MacBook Pro was updated to MacOS 14.4.1, the Dell U2718E display still did not work properly via type-c linking

Exact same problem here - and its definitely a macOS 14.4 issue because I have identical work and personal computers, one MBP is on 14.4 with broken USB functionality and the other is on 14.3 and everything works as it previously did. For the suggestion to ask every time, do you have to do that every time you re-dock then?

Changing:

System Settings->Privacy&Security->Allow accessories to connect->

to: automatic if unlocked

fixed the issues on my setup after reconnecting the monitors. Not the best way but working for now

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.

Same issue usb problem macbook air a1932 2019 os 14.4.1

I was able to fix this! My usb hub stopped working after Sonoma upgrade so based on other comments, I unplugged my hub, restarted the Mac, then plugged the hub back in. Like a miracle, my usb hub and all items were now recognized. Please give that a try. Good luck.

Not only will my Mac no longer recognise peripherals, it also won't accept power via any of the adapters I have tried. I now have to choose between getting charge and, just for examples, backing up, having a monitor, or connecting to ethernet. This simply has to be the worst update to any system that I have ever experienced!

Good grief ! I didn't have a problem before with 14.1 but now after installing 14.4.1, my M2 MacBook Air no longer recognises my keyboard attached to the hub on a Dell U3219Q display connected by USB-C, even after multiple reboots. I didn't have a problem with 14.4 so instead of fixing the problem, 14.4.1 seems to have created the problem for me !

[Update - so looks like the problem has to do with the "allow accessories to connect" setting. I had to change the setting to "Ask Every time" so that the next time I connected the monitor, I had to give it permission for it to connect. After that I changed the setting back to "Ask for new accessories" and it continues to work even after unplugging the monitor and plugging it back.

I have one bluetooth and one USB keyboard so it's possible that immediately after upgrading to 14.4.1 I had answered "no" to allowing the USB keyboard to connect. Alternatively, Sonoma 14.4/14.4.1 has trouble keeping track of devices that have been connected through a hub and forgot that I had already approved the keyboard before the upgrade. ]