I to had this exact problem last week and had to rollback Windows. I notice now though there is BIOS update for 9370 (1.3.3) that mentions TB18 (typo?) fixes.  Going to leave it a bit before trying 1803 again though as it was a real pain to correct.

Is this the fix DELL?

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@doumhfr wrote:

Hi,

 

since the Windows 1803 update, my Dell TB16 dock doesn't work well on my XPS 13.

The second display is working but all functions that are using USB doens't work (external HDD, sound and network card)

They doesn't appear at all in the device manager.

 

Do you have a solution ?

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Hi @doumhfr , I can't say I have heard this issue occurring after the recent Windows update. You could try rolling back a few days and then trying to install the update again.

If that fails and you need to install the drivers again, the following drivers need to be installed in the order outlined in this article 

Alan

You might want to refer to this forum thread. Others have experienced this issue.

https://www.reddit.com/r/Dell/comments/8k661w/tb16_dock_and_windows_spring_update_1803/

JohnD

@johnptd thanks for the link to reddit. I see one of the users has advised that the TB16 is working fine after the update. 

That would suggest that the issue could related to out of date drivers, firmware or BIOS. I would recommend running Command | Update to ensure the dock drivers, firmware and BIOS are up to date before installing the 1803 update.

If you are still having problems after applying the 1803 update I would recommend rolling back the system to the previous Windows revision and then running Command | Update. Once that's done, then apply the update for 1803.

Alan

TB16 works for me on my 9575 since last windows update, but it takes close to 5 minutes for my displays to turn on and mouse & KB to become active after I connect.  :/

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@sl4ppy wrote:

TB16 works for me on my 9575 since last windows update, but it takes close to 5 minutes for my displays to turn on and mouse & KB to become active after I connect.  :/

 

 

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Hi @sl4ppy, 

That's the first I have heard of this issue. It does sound like it's driver related. There have been a raft of driver updates for the 9575 since the 1803 release. If you haven't already done so, I would recommend using the Command | Update application to update your drivers to the latest revision.

Alan

I have the same problem with my brand-new XPS 13 9370. 

USB ports on the TB16 dock are not working. I have updated everything etc. :-(

Yes, I was in a long chat with Dell support and did those step. I reverted back to 17.09 in order to apply the update.

Now when I am back to 18.03 it does not work any more. This is a brand new computer with a TB16 dock that was recommended by Dell when I bought it. I will have to return it.

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@PetterS wrote:

I have the same problem with my brand-new XPS 13 9370. 

 

USB ports on the TB16 dock are not working. I have updated everything etc. :-(

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Hi @PetterS, in order to determine exactly what is causing this issue, can you help me out with some more details please - 

a) Have the USB ports ever worked on the TB16?
b) Did you follow the step by step guide for installing the drivers correctly for the TB16 as listed here
c) When you say "updated everything" how did you do this, manually install drivers or via Dell Command | Update?
d) Are you running the latest BIOS on the 9370 - 1.4.0

Alan