Bram,

This is because USB3 and USB-C ports in TB16 are connected to different 
controllers. See my lshw output here - 
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667750/comments/23 - I've 
marked Ethernet cards with <<--. Working one is USB-C and it is under this one:
/0/100/1d.6/0/1/0/4/0/4 bridge DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 
2015]
/0/100/1d.6/0/1/0/4/0/4/0 bus DSL6540 USB 3.1 Controller [Alpine Ridge]

Alex

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https://bugs.launchpad.net/bugs/1667750

Title:
  xhci_hcd: ERROR Transfer event TRB DMA ptr not part of current TD
  ep_index 2 comp_code 13

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