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by vetinari 1995 days ago
The OWC TB3 dock I'm using is also powered externally. Docks by CalDigit are different docks than OWC, but I think they are all using the same chipset underneath.

It also does not happen with Intel Macs, which use Intel TB implementation. With M1, the TB is brand new, so some issues are to be expected. I suspect that with sleep and wakeup, there is some state mixup with previous link training, so it doesn't talk to other side the way the other side expects. This might be - or might be not - fixed with firmware updates.