I have a laptop with a TB2 dock connected via TB3 using the TB3->TB2 Apple
adapter.

I'm using USB audio on this dock and since kernel 6.3.4, I get a random
disconnection that can happen 1h or a few hours after boot:

[Jun 5 11:25] xhci_hcd 0000:09:00.0: WARN Event TRB for slot 1 ep 1 with no TDs
queued?
[  +0.033032] xhci_hcd 0000:09:00.0: WARN Event TRB for slot 1 ep 1 with no TDs
queued?
[  +0.906993] xhci_hcd 0000:09:00.0: xHCI host controller not responding,
assume dead
[  +0.000037] xhci_hcd 0000:09:00.0: HC died; cleaning up
[  +0.000041] usb 3-4: USB disconnect, device number 2


When this happens and audio is playing, it stops playing via the dock and
switches to my laptop speakers.

Replugging the TB3 adapter usually make it work again (if audio is playing it
switches automatically from speakers to TB USB audio), for a while.

That setup was rock solid until updated to kernel 6.3.4.