My 2 USB 2 hubs are not showing up . . .

[richmond62]

So: having upgraded to MacOS 12 beta 3 I have found that my 2 USB 2 powered hubs are not being seen, and the peripherals connected through them, obviously, do not work.

I have one powered hub connected through the USB port on my Mac Mini and another one connected via a USB-C converter to a Thunderbolt port.

This is a right pox as quite a few peripherals I depend on for my work are now silent.

 

[chabig]

If it is software related, I’m sure Apple will fix it before Monterey is released.

 

[richmond62]

It would be lovely if I could sort it out before Monday. 🥰

 

[DeltaMac]

You did make a backup when you installed Monterey, so you can boot back into Big Sur (?)
There's always the risk on a system that is in beta testing to have unexpected issues, and is the main reason that Apple recommends not installing a beta system on a primary system.

 

[fisherking]

is this an intel mini or M1? if intel, try resetting the smc, then the nvram (if the smc reset doesn't do it). otherwise, look up troubleshooting on the M1, there's a different path for the new processors...

 

[flowrider]

I have no issue with my powered USB Hub working in 12.0 Beta 3. 2019 Intel NcMP.

(https://www.amazon.com/gp/product/B07VSD52J6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)

Lou

 

[richmond62]

Well, oddly enough, having turned off my machine and gone to bed, now in the mroning all the USB hubs and so on are working as before: so that is after 3 restarts . . . deus ex machina.

 

[DeltaMac]

Yes, for years, I troubleshoot hardware/device issues by shutting off power, unplugging everything, then letting the computer or device sit without connecting anything for several minutes. Then, connect everything, and reboot a Mac while resetting NVRAM, giving the Mac a chance to do 3 or more reset cycles before allowing a normal boot. Always remember to set your Startup Disk after that boot, as that will be cleared during the NVRAM reset. That process that I use often leads to a better result (in my experience) than a simple restart (when the system already has power), because an external device may not do a full reset. Removing all power is my goal.

 

[richmond62]

Thanks DeltaMac: very useful information.