• Set up: Ubuntu 16.04.1 LTS
  • Kernel : 4.9.0-040900rc7-generic
  • Machine : Dell Xps 9360
  • Docking : Thinkpad thunderbolt 3 docking station

I want to connect the docking station and make it work for a dual display set up. The displays are not recognised in xranrd neither can thunderbolt be found in /sys/bus/. Usb not recognised either. Bios changed to allow thunderbolt 3. Charging however works.

Anyone undertaken this task?

I have updated my BIOS to the current version (2.5) and the kernel to 4.14. This did not help.

  • Have you tried turning off Thunderbolt Security in the BIOS? Currently, there's extremely limited support for the Thunderbolt Port Security in Ubuntu. Redhat devs are working on a software called Bolt that will hopefully fix the problem in the future. – Nader Apr 24 '18 at 19:05
  • yeah first thing that came to mind! Did that, would have been such an easy fix! – Benedict K. Apr 25 '18 at 8:58
  • Which version of Kernel 4.14.xx? Note 4.14.36 and 4.14.37 are broken for sure so don't install them or you'll have to manually fix apt database. – WinEunuuchs2Unix May 1 '18 at 0:12

Gonna take a guess at you connecting via DisplayPort; the following is the steps I took to get support for DisplayPort and all my peripherals using the TB16 Dell Dock (hopefully these steps still help)

  • apt upgrade, apt update, etc
  • updated BIOS to newest version
  • updated Kernal to 4.16.6 (More support for TB added at some point between 4.13, the first with tb3 support, and 4.16.6)
  • turned on user level TB security in BIOS


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