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3 Posts

07-18-2021

Czech Republic

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T14 won't connect to external NVIDIA graphics card after spontaneous turn-off

2021-07-18, 18:53 PM

Hello everyone,

First of all, I would like to apologize for my English - IT is not really my area of interest and because of that I don't know all the proper terminology in the field. However I'll try my best to describe the problem and maybe someone of you will be that kind to help me.

I have NVIDIA GeForce RTX 2060 (external, not in the computer) since October/November 2020, it was brand new. It is put in Lenovo Legion Powerboost dock. For playing video games, I connect it by cable to my computer, laptop Lenovo Thinkpad T14 (also new since September/October 2020). It is connected via thunderbolt version 3. For gaming I used to connect it also to an older screen Multisync LCD 175VMX+. After turning the GeForce on, the screen used to connect itself (after like 5 seconds after turning on the GeForce) and that was it, the screen was linked to the GeForce (not to the laptop).

It all worked fine until two weeks ago. I was playing a game (Torment: Tides of Numenera, if it matters) and suddenly for a reason (that I had nothing to do with, just to clarify) the computer turned itself off. I thought it was because of overheating or overloading or something like that, so I gave it some time and I turned it on again. The big screen didn't connect anymore, not even after several tries (sometimes it wouldn't connect on the first try - I had to turn the laptop off, turn the GeForce off, wait a few minutes and do another attempt). I called my dad (who is IT specialist and who was "responsible" for how all the devices were connected and so on) and he, after trying some stuff for few hours, observed the following (I translated it from his notes so I hope it is comprehensible) :

  • the GeForce seems to be installed and is visible in Device Manager.
  • If the GeForce is uninstalled, after the restart of the computer and connection of the GeForce to the computer, the GeForce is seemingly installed properly.
  • Device Manager says that GeForce works fine.
  • However, Windows 10 won't use the GeForce – they can't detect the additional screen, they don't display the GeForce in task manager (it shows only the integrated intel), NVIDIA manager is impossible to launch (can't be launched without an error message).
  • According to Windows system logs there is not problem whatsoever
  • according to the logs there was no recent update of Windows or Lenovo - there was an update to firewall like 5 days before but everything worked fine for those 5 days until the turn off
  • the previous NVIDIA driver was from January 2021, my dad tried to update it to the current version but to no avail.

My dad's final remark is that it seems that the GeForce itself works fine and that the problem lies within the Windows' side. He is not 100% sure though and he is a kind at his wits' end with possible solutions to the problem.

 

Does anyone have an idea what to do? Any advice would be appreciated!

 

TL;DR After a spontaneous self-turn-off of T14 during video gaming, there is an ongoing and unresolved problem with connection of the laptop to an external graphics card.

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2834 Posts

03-11-2020

Greece

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Re:T14 won't connect to external NVIDIA graphics card after spontaneous turn-off

2021-07-19, 10:31 AM

Hi kukukukuku,

 

Welcome to the Community Forums.

 

 

During abrupt shut downs, the hand shake that was between hardware can bug out/get stuck and cause problems.

 

I'd recommend trying a static discharge on the device and a Load Default Settings in the BIOS:

 

Step 1. PMU - Static Discharge
- Remove all cables attached to the laptop (ac adapter/power, hdmi, external mouse/keyboard/GPU's etc, etc)
- Ensure device is switched OFF
- Hold down power button for 60 seconds
- Re-attach all cables
- Connect the AC Adapter, then let the device charge for about 2 minutes (if it does) then start up as usual.
- Try this a couple of times in case it doesn't solve the issue the first time (2-3)

- If the problem persists, continue below:

 

Step 2. BIOS Load Default Settings.
- Select the Start Menu, then choose Settings > Update & Security > Recovery. Under Advanced startup, select Restart now. After your PC restarts to the Choose an option screen, select Troubleshoot > Advanced options > UEFI Firmware settings
:or:
- Press the power button to completely shut down the unit.
- Press the F1 or F2 (FN+F1 or F2) repeatedly on startup to enter BIOS.
- Navigate to the "Restart" tab
- Press "Load Default Settings"
- Save & Exit changes or F10.

 

Hope this helps

 

Regards

 

Voithos



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5641 Posts

08-02-2018

Philippines

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  • Message 3 of 6

Re:T14 won't connect to external NVIDIA graphics card after spontaneous turn-off

2021-07-19, 10:32 AM

Hi kukukukuku!


Welcome to community forums

 

 

Could you provide the MTM of your laptop and the Legion power boost dock? Could you also provide a screenshot of the OS version and the BIOS version under the system information?

 

Just to make sure everything is up to date, run the update through the Lenovo Vantage app and install all pending updates.


Let us know.

 

 


Jwes_Lenovo



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3 Posts

07-18-2021

Czech Republic

6 Signins

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  • Message 4 of 6

Re:T14 won't connect to external NVIDIA graphics card after spontaneous turn-off

2021-07-20, 10:27 AM

@Voithos 

Thank you for your quick and detailed reply! I just want to ask (sorry, if it is a stupid question) :

1) the Step1 and Step2 are alternatives, or am I supposed to do Step2 after Step1 is done successfully?

which leads to another question: 

2) How do I find out if Step1 was successful? Should everything work like before (in other words, the extra screen is connected automatically and so on), or should I check it somewhere somehow? 

 

@Jwes_Lenovo 

I am sorry but I frankly don't know where to find the information regarding MTM (is that Microsoft Test Manager or is it something else?) and Legion, but hopefully these are the information regarding BIOS and OS that you asked for:

BIOS : N2XET30W 1.20 

WINDOWS : Windows 10 Pro, version 20H2, build of OS 19042.1110, type of OS: 64bit

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2834 Posts

03-11-2020

Greece

331 Signins

14361 Page Views

  • Posts: 2834
  • Registered: ‎03-11-2020
  • Location: Greece
  • Views: 14361
  • Message 5 of 6

Re:T14 won't connect to external NVIDIA graphics card after spontaneous turn-off

2021-07-20, 11:00 AM

You do step 1, and if the monitors now function properly, there's no need to do step 2, but if step 1 fails, you do step 2. 

 

You can find the MTM number for your machine by looking at this Knowledge Guide

 

 

Regards

 

Voithos



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3 Posts

07-18-2021

Czech Republic

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  • Message 6 of 6

Re:T14 won't connect to external NVIDIA graphics card after spontaneous turn-off

2021-07-28, 15:29 PM

UPDATE:

 

 

Hi everyone, we tried the STEP 1, that @Voithos  suggested, several times but sadly to no avail (no change whatsoever) (we didn't try the STEP 2 because my father is a kind of "afraid" of BIOS because we don't really what has changed over the years and what other consequences it could have). For verification of the thunderbolt connector of the laptop we tried to connect several thunderbolt docking stations and even under Windows everything worked as it should (it seems that the thunderbolt port is ok). We tried to boot Ubuntu (more precisely: ubuntu-20.04.2.0-desktop-amd64) several times with connected Lenovo Legion Powerboost dock and everything worked fine as it should (the extra screen connected itself immediately and so on). Following this, we made the conclusion that the Legion Powerboost dock and the GeForce are fine and working. However, the problem with Windows persists - the graphic card doesn't work / Windows claim that the driver works fine but the graphic card doesn't get initialized (probably). We think that the problem perhaps lies somewhere in registers in the part that doesn't get initialized by the installation and uninstallation of drivers (but we don't know where exactly the problem lies). Do you have any other idea what to do?

 

We think about the replacement of NVme storage and the installation of pure Windows via BIOS from Lenovo site. Can we expect any problems during the installation?

 

In case anyone of you has an idea, thank you in advance. 

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