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devnulljp
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Posts: 19
Registered: ‎05-14-2009
Location: CA
Views: 5,632
Message 1 of 13

USB port stopped working: Thinkpad X1 Carbon

The left USB port stopped working last night on my Gen 3 Thinkpad X1 Carbon.

Don't think it's a driver problem, as it's been working fire up til now.

The port just no longer exists as far as I can see. Plugging into it does nothing.

 

Any ideas?

Thanks

SeniorGuru
Posts: 2,719
Registered: ‎12-22-2008
Location: CA
Views: 5,607
Message 2 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

The port just no longer exists as far as I can see. 

 

What does Device Manager show (under Universal Serial Bus controllers)?

 

Don't think it's a driver problem, as it's been working fire up til now.

 

1. It could still be a driver issue. I would uninstall the current USB driver even if it's up-to-date, then download the latest version and reinstall it. 

 

2. It could be a hardware issue. The X1C3 has two USB 3.0 ports. Does the other port work? If it does then it's likely the issue with the other port is hardware-related.

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Cheers... Dorian Hausman • ca.gif English community
X1C6, E470, Y900s, [R.I.P. X1C2, T430s, TPT2, SL500, X61s, T60p, A21p, 770, 760ED... 5160, 5150... S360/30]
Kevliu78
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Registered: ‎03-12-2018
Location: SG
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Message 3 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

Probably motherboard issue, if still under warranty and claim from Lenovo.

devnulljp
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Posts: 19
Registered: ‎05-14-2009
Location: CA
Views: 5,529
Message 4 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

Yes the other USB port is working, so prob not a driver issue. Dammit, I'm having no luck with these modern Lenovo Thinkpads.
SeniorGuru
Posts: 2,719
Registered: ‎12-22-2008
Location: CA
Views: 5,512
Message 5 of 13

Re: USB port stopped working: Thinkpad X1 Carbon


@devnulljp wrote:
Yes the other USB port is working, so prob not a driver issue. Dammit, I'm having no luck with these modern Lenovo Thinkpads.

If the X1C3 is no longer under warranty then an inexpensive 4-port USB hub in the working port is a lot cheaper than a new motherboard. It's not as convenient, of course, but that's probably what I'd do under the circumstances.

__________________________________________________
Cheers... Dorian Hausman • ca.gif English community
X1C6, E470, Y900s, [R.I.P. X1C2, T430s, TPT2, SL500, X61s, T60p, A21p, 770, 760ED... 5160, 5150... S360/30]
Community SuperMod
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Posts: 4,527
Registered: ‎04-25-2008
Location: US
Views: 5,507
Message 6 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

devnulljp, did you try the emergency reset button?

I don't work for Lenovo. I'm a crazy volunteer!
devnulljp
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Posts: 19
Registered: ‎05-14-2009
Location: CA
Views: 5,498
Message 7 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

No I didn't try the reset. I'll give it a go now and report back.
devnulljp
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Posts: 19
Registered: ‎05-14-2009
Location: CA
Views: 5,492
Message 8 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

Brilliant! That did it. Thanks

Shut down, emergency reset. Start up and the port is working again.

kaize
Paper Tape
Posts: 1
Registered: ‎08-14-2018
Location: GB
Views: 4,854
Message 9 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

Hi,

 

How do you perform this emergency reset? im having the same issue as the op.

bjoern2
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Posts: 3
Registered: ‎09-21-2018
Location: DE
Views: 4,403
Message 10 of 13

Re: USB port stopped working: Thinkpad X1 Carbon

for emergency reset, power off the device and unplug the power cord.

then, on the back of the computer, search for a little hole.

use a bented paper clip to push the button in the hole.

(i assume this disconnects the battery physically or so)

 

btw. i have the same problem, but this reset does not work for me, see https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/data-connection-for-left-hand-standard-usb-po...

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