English Community

ThinkPad NotebooksThinkPad: T400 / T500 and newer T series Laptops
All Forum Topics
Options

5 Posts

08-03-2015

RU

8 Signins

74 Page Views

  • Posts: 5
  • Registered: ‎08-03-2015
  • Location: RU
  • Views: 74
  • Message 1 of 5

Thinkpad USB-C Dock Gen2 with T14 - issue with HDMI display after firmware update

2021-01-13, 23:00 PM

Hi!

 

I think I have an issue with my Thinkpad USB-C Dock Gen2.

 

I use it with T14 Gen1 AMD laptop, 2 monitors are connected to the dock: one via a DisplayPort, the other via HDMI-DVI cable.

It used to work just fine for several weeks until today...

 

Today I installed a firmware upgrade for my dock via Lenovo Vantage software - ThinkPad USB-C Dock Gen2 FW Package - 7/10 [64] - 1.0.6.06161

 

Once the firmware installed my HDMI-DVI monitor started showing a corrupt picture, I see only stripes as if the signal is mangled somehow (see attachment). Nothing really changed except that update I installed. I'm running the latest Windows 10, all the latest drivers are installed.

 

Does anyone know if:

 

1. it is possible to rollback the firmware upgrade from the dock? I haven't seen the issue with the previous firmware

2. are there any workarounds for this issue? 

 

Thanks!

Boris

Reply
Options

5 Posts

08-03-2015

RU

8 Signins

74 Page Views

  • Posts: 5
  • Registered: ‎08-03-2015
  • Location: RU
  • Views: 74
  • Message 2 of 5

Re:Thinkpad USB-C Dock Gen2 with T14 - issue with HDMI display after firmware update

2021-01-16, 12:56 PM

I tried

1. connecting my second monitor with DP - DVI cable 

2. connecting another laptop (Lenovo Legion 5) to the dock

 

and I see the same issue.

 

To me all this confirms that the firmware update is to blame. I really need to find a way to install previous firmware version to my dock. 

 

Reply
Options

5 Posts

08-03-2015

RU

8 Signins

74 Page Views

  • Posts: 5
  • Registered: ‎08-03-2015
  • Location: RU
  • Views: 74
  • Message 3 of 5

Re:Thinkpad USB-C Dock Gen2 with T14 - issue with HDMI display after firmware update

2021-01-19, 11:46 AM

One other observation: if I plug my DVI monitor directly into the laptop's HDMI socket, then all works. 

 

Reply
Options

426 Posts

06-26-2016

DE

978 Signins

12689 Page Views

  • Posts: 426
  • Registered: ‎06-26-2016
  • Location: DE
  • Views: 12689
  • Message 4 of 5

Re:Thinkpad USB-C Dock Gen2 with T14 - issue with HDMI display after firmware update

2021-01-19, 21:39 PM

Try to disconnect the dock from AC adapter for a few seconds.  Quite often just plugging in a DP to DVI adapter in dock's (UltraDock 40A2 ) DP port were not successful for me. Only after a brief power loss the dock would recognise the attached monitor.

 

Reply
Options

5 Posts

08-03-2015

RU

8 Signins

74 Page Views

  • Posts: 5
  • Registered: ‎08-03-2015
  • Location: RU
  • Views: 74
  • Message 5 of 5

Re:Thinkpad USB-C Dock Gen2 with T14 - issue with HDMI display after firmware update

2021-01-20, 14:18 PM

Thanks for the suggestion!

I tried it today but the issue is still there unfortunately.

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete

X

No, I don’t want to share ideas Yes, I agree to these terms