I am looking to compare some notes regarding Thunderbolt hub behavior and M1 macs. For reference a Thunderbolt hub is a class of new Thunderbolt devices that give you three thunderbolt ports from a single connection back to the computer. These include the OWC Thunderbolt Hub, a similar one from Plugable and the Kensington SD5700T. Because I review this stuff for a living I have all three !
So here’s what’s happening on both my M1 MacBook Air from last year and my M1 Max Macbook Pro that I bought a few weeks ago:
When the system goes to sleep the hub disconnects. Sometimes it crashes the Macbook, other times it just disconnects the connected devices (not good if you have hard drives connected), and occasionally the hub itself will lock up requiring a complete reboot of it and the computer.
Initially I thought it was maybe something physically wrong with my M1 Macbook Air or the OWC Dock but my Pro is exhibiting the same behavior regardless of which dock I connect.
I’ve filed a radar with Apple but it hasn’t been looked at. I do think this is a big issue with how Apple is implementing Thunderbolt on the M1’s.