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April 18th, 2017 08:00

XPS 13 & TB16 - USB and peripherals randomly losing connection

XPS 13 9350 (i7 6560U, WQXGA+). TB16 240W. External monitor Dell P2415Q 4k, connected with full DP.

Notebook connected with TB16 with Thunderbolt 3. All external device (some USB, audio, ethernet, monitor, mouse-keyboard) connected through TB16. Works fine, but not for long.
Randomly ALL peripherals connected become inaccessible, except external monitor that is stay working. Fixed only after reboot.

All drivers installed, except USB ASMedia eXtensible Host Controller driver - any attempts to use dell drivers failed, it works only with standard windows driver. BIOS and thunderbolt firmware updated.
Turn on airplane mode does not help, as well as changes over Bluetooth power state.

2 Posts

August 4th, 2017 10:00

Same issue here. 9360 and bios 1.3.7.

Tried downgrading to 1.3.5 and that didn't help.

489 Posts

August 4th, 2017 14:00

DELL PLEASE PULL THE LATEST BIOS UPDATES IMMEDIATELY BEFORE MORE DOCK USERS GET SCREWED!

The bug seems to go across all XPS platforms and Dell docks...

2 Posts

August 4th, 2017 16:00

I have the same problem! Any solution from Dell? (9360 TB16 and BIOS 1.3.7)

August 4th, 2017 21:00

Just chiming in - I am also affected.  9360 and TB16 dock.

4 Operator

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14K Posts

August 7th, 2017 16:00

There are now ALSO updates to the Thunderbolt firmware and driver on the XPS 13 9360 page....

5 Posts

August 10th, 2017 03:00

I have try also BIOS 2.1.0 on my 9360. Still the sam *** with USB issue!!!

11 Posts

August 13th, 2017 06:00

Did an Bios, Thunderbolt and USB Update yesterday on my XPS 13 9350 + TB16.

USB, Audio and LAN stopped working, devices not longer visible. Sometimes i see the TB16 turns USB on/off every few seconds and gave up, alles devices off.

BIOS Boot and Windows load times goiing up since this issue.

August 13th, 2017 11:00

Any updates from Dell on this issue? A dock which doesn't even allow USB devices to work is pretty useless.

August 15th, 2017 10:00

Updated with many new drivers (August 14-15), chipset, IO, video, TB16 drivers etc.

USB devices still drop, maybe they will help those with "broken" TB16 though...

1 Message

August 22nd, 2017 08:00

i 've also updated to 2.1.0 and my mouse is completely erratic...

August 22nd, 2017 08:00

Noticed that there is a "new" BIOS version on the website now, 1.0.7.  Has anyone tried this version?  Or maybe tried downgrading to this version, then upgrading to 2.1.0?  I'm wondering if this is the fix for the TB16

August 22nd, 2017 10:00

Be careful with BIOS 1.0.7. (released yesterday). The update failed on me. Cannot boot laptop. This has never happened to me in 5 years with a computer park of 30 computers. Didn't close computer at wrong moment nor did battery failed.

Now I have to troubleshoot a non-bootable XPS 9360!

Cannot say if the bios is the problem or if I'm the only with this.

September 20th, 2017 14:00

Recap XPS 9360 + TB16 :

March to July : No problem, everything works perfectly

July : BIOS update, USB devices fail, have to plug my devices on laptop directly on the laptop

August : a bios update bricked my laptop COMPLETLY. Dell replaced my motherboard on site.

Newest BIOS update 2.2.1 fixed my USB issues.

I am all-set and back on track.

If you have been worried, my problems are gone with all the newest drivers. Can't say if it fixes all problems on this thread though.

1 Message

October 27th, 2017 00:00

I've had a rock solid XPS 13 9360 & TB16 since the TB16s release, however updating to the recommended 2.3.1 bios I now have a useless dock with connection cutting in and out intermittently. This setup is absolutely useless now and from what I'm reading this hasn't been fixed for a run of updates and no fix in site :-S

what now?

4 Operator

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14K Posts

October 27th, 2017 08:00

Actually BIOS 2.2 created that problem and 2.3.1 fixed it. At least that’s how it worked for me and several other users here. Make sure your Thunderbolt software and firmware are up to date, as well as the ASMedia USB Host Controller driver.

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