I also just saw this during a forced XHCI reset (after the USB bus
failed to connect):

----8<----
[  247.130032] usb 3-1.6.2.4: new low-speed USB device number 9 using xhci_hcd
[  247.388286] usb 3-1.6.2.4: New USB device found, idVendor=04d9, 
idProduct=2013, bcdDevice= 1.03
[  247.388287] usb 3-1.6.2.4: New USB device strings: Mfr=1, Product=2, 
SerialNumber=0
[  247.388288] usb 3-1.6.2.4: Product: USB Keyboard
[  247.388289] usb 3-1.6.2.4: Manufacturer:  
[  247.454042] usb 3-1.6.5: new high-speed USB device number 10 using xhci_hcd
[  247.511444] input:   USB Keyboard as 
/devices/pci0000:00/0000:00:1d.6/0000:06:00.0/0000:07:01.0/0000:09:00.0/0000:0a:04.0/0000:0c:00.0/0000:0d:01.0/0000:0e:00.0/usb3/3-1/3-1.6/3-1.6.2/3-1.6.2.4/3-1.6.2.4:1.0/0003:04D9:2013.0014/input/input44
[  247.570426] hid-generic 0003:04D9:2013.0014: input,hidraw4: USB HID v1.00 
Keyboard [  USB Keyboard] on usb-0000:0e:00.0-1.6.2.4/input0
[  247.583572] input:   USB Keyboard System Control as 
/devices/pci0000:00/0000:00:1d.6/0000:06:00.0/0000:07:01.0/0000:09:00.0/0000:0a:04.0/0000:0c:00.0/0000:0d:01.0/0000:0e:00.0/usb3/3-1/3-1.6/3-1.6.2/3-1.6.2.4/3-1.6.2.4:1.1/0003:04D9:2013.0015/input/input45
[  247.613793] usb 3-1.6.5: New USB device found, idVendor=0424, 
idProduct=274c, bcdDevice= 2.00
[  247.613796] usb 3-1.6.5: New USB device strings: Mfr=1, Product=2, 
SerialNumber=0
[  247.613797] usb 3-1.6.5: Product: Hub Controller
[  247.613799] usb 3-1.6.5: Manufacturer: Microchip Tech
[  247.642290] input:   USB Keyboard Consumer Control as 
/devices/pci0000:00/0000:00:1d.6/0000:06:00.0/0000:07:01.0/0000:09:00.0/0000:0a:04.0/0000:0c:00.0/0000:0d:01.0/0000:0e:00.0/usb3/3-1/3-1.6/3-1.6.2/3-1.6.2.4/3-1.6.2.4:1.1/0003:04D9:2013.0015/input/input46
[  247.642466] hid-generic 0003:04D9:2013.0015: input,hidraw5: USB HID v1.00 
Device [  USB Keyboard] on usb-0000:0e:00.0-1.6.2.4/input1
[  247.703468] hid-generic 0003:0424:274C.0016: hiddev2,hidraw6: USB HID v1.10 
Device [Microchip Tech Hub Controller] on usb-0000:0e:00.0-1.6.5/input0
[  249.085573] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.085576] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa2040 
trb-start 00000000fffa2020 trb-end 00000000fffa2020 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.086506] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.086509] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa2050 
trb-start 00000000fffa2020 trb-end 00000000fffa2020 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.087505] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.087509] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa2060 
trb-start 00000000fffa2020 trb-end 00000000fffa2020 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.088504] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.088506] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa2070 
trb-start 00000000fffa2020 trb-end 00000000fffa2020 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.089505] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.089506] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa2080 
trb-start 00000000fffa2030 trb-end 00000000fffa2030 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.090504] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.090507] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa2090 
trb-start 00000000fffa2030 trb-end 00000000fffa2030 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.091507] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.091511] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa20a0 
trb-start 00000000fffa2030 trb-end 00000000fffa2030 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.092507] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.092510] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa20b0 
trb-start 00000000fffa2030 trb-end 00000000fffa2030 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.093505] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.093509] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa20c0 
trb-start 00000000fffa2030 trb-end 00000000fffa2030 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.094507] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.094512] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa20d0 
trb-start 00000000fffa2030 trb-end 00000000fffa2030 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  249.095507] xhci_hcd 0000:0e:00.0: ERROR Transfer event TRB DMA ptr not part 
of current TD ep_index 6 comp_code 13
[  249.095510] xhci_hcd 0000:0e:00.0: Looking for event-dma 00000000fffa20e0 
trb-start 00000000fffa2030 trb-end 00000000fffa2030 seg-start 00000000fffa2000 
seg-end 00000000fffa2ff0
[  281.905693] usb 3-1.6.3: new full-speed USB device number 11 using xhci_hcd
[  282.165146] usb 3-1.6.3: New USB device found, idVendor=046d, 
idProduct=c52b, bcdDevice=12.07
[  282.165149] usb 3-1.6.3: New USB device strings: Mfr=1, Product=2, 
SerialNumber=0
[  282.165150] usb 3-1.6.3: Product: USB Receiver
[  282.165151] usb 3-1.6.3: Manufacturer: Logitech
[  282.312085] logitech-djreceiver 0003:046D:C52B.0019: hiddev3,hidraw7: USB 
HID v1.11 Device [Logitech USB Receiver] on usb-0000:0e:00.0-1.6.3/input2
[  282.508671] logitech-hidpp-device 0003:046D:402D.001A: HID++ 2.0 device 
connected.
[  283.632911] logitech-hidpp-device 0003:046D:402D.001A: multiplier = 8
[  283.632980] input: Logitech Wireless Mouse M560 as 
/devices/pci0000:00/0000:00:1d.6/0000:06:00.0/0000:07:01.0/0000:09:00.0/0000:0a:04.0/0000:0c:00.0/0000:0d:01.0/0000:0e:00.0/usb3/3-1/3-1.6/3-1.6.3/3-1.6.3:1.2/0003:046D:C52B.0019/0003:046D:402D.001A/input/input47
[  283.633345] logitech-hidpp-device 0003:046D:402D.001A: hidraw8: USB HID 
v1.11 Keyboard [Logitech M560] on usb-0000:0e:00.0-1.6.3/input2:1
----8<----

The USB keyboard has a built-in hub into which the Logitech unified
receiver is connected, and that receiver seems to be causing a lot of
problems and delays during initialization.

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https://bugs.launchpad.net/bugs/1856161

Title:
  Thunderbolt dock fails to connect USB devices

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