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4 Posts

08-16-2021

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Lenovo TB3 Gen 2 dock video failing after firmware updare 3.1.70 and Lenovo T580 laptops

2021-08-16, 21:44 PM

Having the same issue with multiple T580's and docks.

 

After update:

 

When connecting to laptop via TB3 cable that came with dock, computer shows the 2 4K screens connected via either HDMI or Displayport are connected but not getting any video signal.

 

When connecting with same laptop/cable/dock to USB-C port on laptop, computer displays to same displays but only one of the two displays shows full 4K resolution.  2nd display shows diminished resolution.  If I disconnect the first display the 2nd jumps up to full rez.

 

Same issue occurs with multiple docks, T580 laptops, all with TB3 cables that came with dock.  I've even reloaded laptop from scratch... same issue.

 

When I connect a Lenovo P15 to the same dock/cable/firmware combo it works like a peach.

 

I'd like to try reverting to previous firmware version but it's not available for download: https://pcsupport.lenovo.com/us/en/products/accessory/docks/thunderbolt-3-workstation-dock/40an/40an0135us/zjt03fz9/downloads/driver-list/component?name=Advanced%20Firmware

 

Been bounced around between hardware and software support with zero progress.

 

Ideas?

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6124 Posts

08-02-2018

Philippines

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Re:Lenovo TB3 Gen 2 dock video failing after firmware updare 3.1.70 and Lenovo T580 laptops

2021-08-17, 11:54 AM

Hello BwithaY!


Welcome to community forums

 


Just to make sure, can you provide the MTM of your laptop? And also, just to clarify, is everything working fine before the firmware update on the dock?

Can you provide the OS version and the BIOS version of the laptop?


Let us know.

 

 


Jwes_Lenovo



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5621 Posts

04-25-2008

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Re:Lenovo TB3 Gen 2 dock video failing after firmware updare 3.1.70 and Lenovo T580 laptops

2021-08-17, 18:21 PM

Idea: Which USB-C port are you plugging into? Only the frontmost USB-C port is Thunderbolt 3 compatible.

USB-C: Just cos it fits don't mean it works.
I don't work for Lenovo. I'm a crazy volunteer!
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4 Posts

08-16-2021

United States of America

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Re:Lenovo TB3 Gen 2 dock video failing after firmware updare 3.1.70 and Lenovo T580 laptops

2021-08-18, 17:48 PM

I tested with both ports using the TB3 cable that came with the dock as well as a third party one from Caldigit.

 

Also tested with multiple docks of the same model and multiple T580 laptops.  I also swapped out screens for some older non-4K Dell displays.

 

The TB3 port results were consistent across all the hardware I tested (yes, I approved the swapped TB3 device in the Thunderbolt software on the laptop).

 

The only variation on the USB-C connected docks was the resolution of the connected displays but consistently one display would work at full resolution and a 2nd would connect at a lower than native resolution.

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4 Posts

08-16-2021

United States of America

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Re:Lenovo TB3 Gen 2 dock video failing after firmware updare 3.1.70 and Lenovo T580 laptops

2021-08-18, 19:36 PM

Yes, this setup had been working consistently before updating dock firmware.

 

My dilemma is that there's no place to download previous firmware versions to test my theory even though there are instructions in the release notes for forcing installation of an old version.

 

The laptops are all patched up to current Win10Pro 64k.

 

I'll grab the specific build and BIOS info and post it shortly.

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4 Posts

08-16-2021

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Re:Lenovo TB3 Gen 2 dock video failing after firmware updare 3.1.70 and Lenovo T580 laptops

2021-08-20, 17:02 PM

Here's the info for one of the affected laptops. 

 

Prod# 20L9001HUS

Bios Version: N27ET42W 1.28

 

It's running fully patched/updated Win10 Pro

 

Just received a replacement dock from lenovo service and swapped it out. 

 

Connected via TB3, approved device and it immediately fixed the issue.

 

Confirmed in Lenovo Vantage that the dock is pre-3.1.70 firmware version.

 

I'm not sure how to check the actual dock firmware version without running the update tool.

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