After Sonoma 14.4 update USB hub not working on MacBook

Same issue here - running two Dell monitors and also have a KVM...

The Mac won't recognize the external monitors through the KVM now....

Love my MAC but this has to be fixed - 3 windows comps hooked up and they are working fine. Even after the USB hub update the monitors still can't be seen. Using an Iogear 1944 KVM connected to pluggable usb hub to turn the thunderbolt connect to 2xdisplay port outputs....worked fine for years until the last update that broke everything

My USB hub with SSD was not working after the 14.4.1 update on my M2 Mac Mini. It was working on 14.4 but the “bug” update apparently caused it to stop being recognized. What worked for me is I shut it down and unplugged everything and then started up the Mac Mini without the USB Hub plugged in. I plugged it in waited a while and it was finally recognized again.

I had the same issue, the USB hub in the screen stopped working after update.

Updating to 14.4.1 did not solve the issue.

What did solve the issue was upgrading to a better USB-C cable, swapping a no-name for a Satechi cable :)

I have a similar problem with USB audio interfaces. Regardless of the hub, regardless of the interface, all drivers up to date. Random and unexplained drop out, interface needs replugging / restarting. Critical issue in the middle of a live concert! 14.4.1 did not correct problem. (M2 Max, 32GB, 14.4.1).

My MacBook Air M2 is also not able to provide two extra monitors. I now have them both working again, but only in mirror mode. So the screen isn't split. Is the only solution getting an expensive docking station or are there any other options?

How are you powering the MacBook? Are you using MagSafe or connecting a USB C cable to the power supply and pass through the hub? I posted this earlier:

"I had a similar issue with the latest Sonoma update 14.4.1. I was using “pass through power” via a USB C hub that had my HDMI, 1 x 4TB SSD, 1 x 5TB spinning disk & supplying power to a USB C Port for syncing iPads. They all failed to work once the update was applied. A support call to Apple found that “Electron paramagnetic resonance“ was the blame. The latest patch will not let you use pass through power is the output of the hub is “questioned” by the OS. I went back to using the Mag Safe power adapter and the hubs now work. I also found out that Apple support was notified ~March 27th 2024 of this restriction."

hi I have my MacBook Pro 2023 M2 Max updated to 14.5 and still didn't solve anything regarding the ports. It's frustrating, because it reads my external hardrive but it wouldn't read any dj controller or any extended hubs. Even if I put it on allow or ask for allow. I deleted the os then reinstall the os,

down grade the os updated it back again,

and still nothing seems to work! A lot of money spent on this laptop and i can't even use it to do my dj jobs. I never had this issue before Sonoma 14.4 came out I know my ports working just dose not connect to any dj controllers this is sad Apple.

I have a Mac mini M1 and after updating to Sonoma 14.5 I am having the same issue as others. Both my HP Envy 4500 printer and Logi C270 external camera stopped working. Actually, I think this may have happened when I did 14.4 update. Both the above are connected to an Insignia (Best Buy) hub I purchased in 2020. I disconnected both the printer and camera and plugged them directly into the M1 and both work. So, is the hub that old that the update doesn't recognize it? Should I just buy a new hub that hopefully recognizes Sonoma?

Tim,

Thank you for the information and actually talking the "hit" on this problem. I had issues with 4.4 & 14.4.1 with two hums on a MacBook Pro M1 and have been holding off on the latest update. If Apple would incorporate a roll-back solution I'd go to 14.5 today and hope I don't have any issues. Now 15.0 is looking like the next upgrade here. I'm not about to fix something that's not broken. :-(

Ok try a PRAM reset.

How to Reset PRAM and SMC - Apple Community

This is from Apple.

Allow accessories to connect to Mac - Apple Support

I have the same issue with two dell monitors, on reddit there's also people complaining of the same with samsung monitors. I also have an M2 Max.

Reddit thread with lots of folks reporting more of the same: https://www.reddit.com/r/MacOS/comments/1b9volo/usb_hub_on_monitor_no_longer_working_on_macbook/

This is still an issue for me after trying the steps suggested in the "best answer" - I am using a Dell U3419W.