XPS

[Diana_CT]

When the charger or a USB device is plugged into the Thunderbolt port on my XPS 15 it is not detected and when I plug them in to either of the USB ports I can charge my laptop or the device is USB device is found.

What I have done:
1) Watched the video "USB Devices Not Working Windows 10 DELL (Official Dell Tech Support)"
https://www.youtube.com/watch?v=yhqwkThfVh4

First problem encountered with the video there is no “General Settings” on the BIOS and the setting that they mentioned I couldn't find it seems like the video hasn't been updated.

2) The I went into “msconfig” and all services were running.

3) Checked update history:
May 10, 2022—KB5013942 (OS Builds 19042.1706, 19043.1706, and 19044.1706)
May 10, 2022-KB5013624 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 20H2, Windows Server, version 20H2, Windows 10 Version 21H1, and Windows 10 Version 21H2

4) F12 went into boot config and ran “Diagnostics” and no problems were found with the USBs.

5) Stumped! What else can I try or is the USB-C dead. This is a new laptop and I bought it in November.

Device: XPS 15 9500
Device name Laptop4
Processor Intel(R) Core(TM) i9-10885H CPU @ 2.40GHz 2.40 GHz
Installed RAM 32.0 GB (31.8 GB usable)
Device ID 99CA00B2-DD01-4A3C-AF2C-4E4DABB76B81
Product ID 00325-82231-35075-AAOEM
System type 64-bit operating system, x64-based processor
Pen and touch Touch support with 10 touch points
BIOS 1.14.0 <Private Service tag removed. TOS64>

Running:
Edition Windows 10 Home
Version 21H2
Installed on ‎11/‎2/‎2021
OS build 19044.1706
Experience Windows Feature Experience Pack 120.2212.4170.0

[Dell-BradL]

Just a quick update on this, per Dell-Cares, testing the system in the BIOS with a USB device plugged in and then unplugged, seemed to get the port working correctly in Windows (after exiting the BIOS). The USB port is currently working in Windows now. 

Please let us know if something changes or if the issue returns. And thanks again or working with us! 

[DrewbyDoo]

Dell-BradL, please elaborate “testing the system in the BIOS with a USB device plugged in and then unplugged, seemed to get the port working correctly in Windows (after exiting the BIOS).”

What are the steps to complete this? Do I test the system in the BIOS with the USB device plugged in and unplug the device… at a certain point during the test, after the test, before a subsequent test, etc.?

I am having similar issues with my XPS 9575 2-in-1, particularly with a Dell docking station (WD19TB). Another docking station (Wavlink model UG69DK1), a USB-C hub (QGeeM model M7VC01-1), and various USB-C devices work fine in any of the four USB-C ports (two of which are thunderbolt ports).

[dp_smartd]

same problem ! 
What are the solution ? 

[Cowboy_Bravo]

For me I had to update my bios and drivers via Dell support website and then in bios turning off Dell USB c dock seems to fix my problem on XPS 9560. I also have all USB and thunderbolt options enabled in bios.

[DrewbyDoo]

This did not work for me. I have tried this in every possible sequence and configuration in BIOS (3 different thunderbolt options and "always allow dell docks" option). This service request has now been open for 51 days, stemming from the original request that's 151 days old - still NOTHING from Dell. 

[rem123456]

I have the exact same problem. My thunderbolt stopped working. I tried previous BIOS firmware version. I reinstalled thunderbolt drivers. I reinstalled tons of oldest/latest versions of Intel UHD and Nvidia (it does control USB c), and yet my docking station or my monitors don't work.

I tried also to run diagnosis for USB-C in the BIOS hoping it would "activate it" as mentioned above but nope ...

• currently trying to reinstall windows to a previous image. But not convinced it would work.

[rem123456]

@Dell-BradL Would you please elaborate? This solution isn't clear.
Not gonna pay 100$ to have the support asking me to run some checks that I have already run 1000 times and have this outsourced guy playing the clock (1h 100$ support) telling me that he would "Recommend" factory resetting the thing. 

2500$ laptop. 1.5 year. old And you lost me as a customer here.

[Dell-BradL]

@rem123456 I sent you a PM, please reply to me when you get a chance. 

[rem123456 · Accepted solution]

Hello,

For those having some trouble getting this Thunderbolt port working after it stopped, here is a trick that worked for me. As mentioned above, previous/latest BIOS firmware, reinstalling thunderbolt drivers, Intel UHD, Nvidia USB-C, ... did not work but one thing worked was to hard resetting the power of the laptop:

Basically, drain any residual power left in the laptop. 

- Turn off your laptop, unplug the power cable, unplug any USB-C.

- Press the power button for 15 - 20 seconds (My Laptop started when doing that).

- Reboot with the power. And the thunderbolt will come back to life.

https://www.dell.com/support/kbdoc/en-us/000139016/how-do-i-perform-a-hard-reset-on-dell-laptop-diff...