Dear Linux folks,


On the Intel Kaby Lake laptop Dell XPS 13 9360, I suspended it on one 
location and detached the Dell DA300 USB-C “mini dock” there, and at a 
different place resumed it from ACPI S3 and plugged in an LMP mini Dock. 
As happens sometimes before, the network interface wasn’t detected 
(`drivers/net/usb/r8152.c`). Normally re-plugging works, but this time, 
and didn’t. Only suspending the system and resuming fixed it. I enabled 
USB dynamic debug with

     echo 'file drivers/usb/* +p' | sudo tee 
/sys/kernel/debug/dynamic_debug/control

after it didn’t work for some time.

Please find the Linux messages attached. It should start from

     [30591.582919] PM: suspend entry (deep)

on.

It may be related to the issue I reported last year, analyzed by Mathias 
already but I didn’t respond yet [1].

No other devices are attached to the USB-C mini dock.


Kind regards,

Paul


[1]: 
https://lore.kernel.org/all/785ddb6f-dca2-466d-c4bb-a6723a51e3e8@linux.intel.com/ (local)
      "Re: xhci_hcd: `Timeout while waiting for setup device command`, 
37 s until Ethernet connection is established"
[2]: https://lmp-adapter.com/product/lmp-usb-c-mini-dock/