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Lenovo Employee terrywang
Lenovo Employee
Posts: 41
Registered: ‎06-12-2018
Location: CN
Views: 1,951
Message 11 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

I have one question about this issue need your help me to confirm. 

Does the USB2.0 port and USB 3.0 port all can not work properly on the dock when symptoms occur?

Thank you.

aaron-p
Paper Tape
Posts: 8
Registered: ‎06-04-2018
Location: AU
Views: 1,947
Message 12 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

yep, nothing works.  Everything cuts out apart form the display

Lenovo Employee terrywang
Lenovo Employee
Posts: 41
Registered: ‎06-12-2018
Location: CN
Views: 1,944
Message 13 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

Please give a screenshot for Device manager  when issue happen.
we want to confirm if is there a yellow mark?

Thank you.

aaron-p
Paper Tape
Posts: 8
Registered: ‎06-04-2018
Location: AU
Views: 1,939
Message 14 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

Since the last BIOS update it's happened less but I'll send it over

Lenovo Employee terrywang
Lenovo Employee
Posts: 41
Registered: ‎06-12-2018
Location: CN
Views: 1,890
Message 15 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

Can you see this issue now? If it is still happen,Can you try upgrading BIOS?

aaron-p
Paper Tape
Posts: 8
Registered: ‎06-04-2018
Location: AU
Views: 1,873
Message 16 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

On BIOS version N23ET48W 1.23 and I've not had a problem since updating, will upgrade to the latest BIOS though

Lenovo Employee terrywang
Lenovo Employee
Posts: 41
Registered: ‎06-12-2018
Location: CN
Views: 1,868
Message 17 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

Thank you for your prompt reply.

armedneutrality
Paper Tape
Posts: 2
Registered: ‎12-17-2018
Location: US
Views: 1,146
Message 18 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

Hi all,

 

It seems like this is the most appropriate topic to post this under, though I do apologize in advance if I'm mistaken. The nature of the symptom (USB devices don't work when already-booted machine is plugged into dock) makes it difficult to search, since the dock itself is identified as "USB-C dock."

 

This behavior is completely deterministic in my case. I have upgraded the BIOS/firmware as instructed, but that doesn't seem to have affected anything at all.

 

If I plug the "off" machine into the dock and then boot it while connected, everything seems to work fine. But unplugging and replugging the dock (or if say the power goes out briefly, or even the cable is wiggled just a little too much) the USB devices (keyboard and mouse are all I'm using at present) are subsequently completely dead until I reboot the machine.

 

Any advice anyone may have to offer will be appreciated immensely. I've been searching for an answer to this for almost 6 months now, and I've finally given up and come here to ask.

 

Thanks in advance!

Mooz80
Fanfold Paper
Posts: 6
Registered: ‎01-07-2019
Location: CA
Views: 1,066
Message 19 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

Hello, 

 

Did somebody found a long term solution to this issue? I'm having the same intermittent disconnect, even on the latest BIOS update (1.34). 

 

I cannot find a specific pattern for the lost connection... 

 

Thanks.

aaron-p
Paper Tape
Posts: 8
Registered: ‎06-04-2018
Location: AU
Views: 1,052
Message 20 of 46

Re: ThinkPad X1 Carbon 6th and ThinkPad USB-C Dock issues

The latest drivers and BIOS update fixed this for me. Not had any issues since

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