Comment by radicality
2 years ago
I think a good step in debugging this would be to download Apple’s “Additional Tools for Xcode 15”, and then open up IO Registry Explorer. There’s a lot more info to see there about attached devices than the standard system profiler.
I'll give that a try, thank you!
There are already some SOP-related messages in the system debug logs (although almost completely redacted), so I'm at least optimistic that this is handled by the OS, and not e.g. purely in firmware in the USB-C controller.