last week my Mac Studio suddenly stopped recognising my wired Apple keyboard. This happens after a reboot or when it was shut down - at first, it was enough to unplug it once and then it was recognised again. Next day it was three times and today it worked briefly after maybe 30, but after another restart stopped working again.
At first I thought it might be a software issue with Karabiner. So I have updated the system and Karabiner to latest versions, reinstalled it and also removed it completely, but the problem persists.
I know for a fact that the keyboard works, because:
- it works instantly on MacBook Air, MacBook Pro and Windows PC
- this model has two USB ports in it and every other keyboard I plug in works, so there shouldn't definitely be any power or cable issue
- I can see it listed in USB devices that are connected as "Keyboard HUB" which is the same name Windows gave me
I have tried every USB port, USB hub and a small USB to USB-C reduction, booting in safe mode - but it just wont get recognised... any other keyboard works.
Googling didnt amount to much either. Is there something else I might try? Maybe some kind of preference reset so it will forget it was ever plugged in?