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4 Posts

05-28-2019

CA

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Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-05-28, 16:37 PM

Good day,

 

I've upgraded my docking station (Thunderbolt 3 Dock Issues (40AC)) on the  22nd of May 2019. Since the update, my 2 monitors are flickering every 2-3 minutes one after the other (not at the same time).

 

I have a Thinkpad P52s on Windows 10 1803. According to the Lenovo Vantage app, the firmware is V.V1.00.12-1.20.00.

 

I've made a search into this forum and I did not find a way to downgrade the firmware.

 

I was wondering if I was the only one getting this issue.

 

 

Thank you for your help.

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222 Posts

08-02-2018

PH

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-05-29, 14:53 PM

Hi Alex_007! Thanks for posting in our community. Since the firmware was updated, reinstalling the dock driver may help us resolving the issue. Please uninstall the existing dock driver from device manager then install it using this link https://download.lenovo.com/pccbbs/mobiles/thinkpad_thunderbolt-3_dock_and_usb-c_dock_driver_v10015.exe thanks. 



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This helped me too

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4 Posts

05-28-2019

CA

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-05-30, 14:12 PM

I did what you ask.

 

I had only 2 screens flickering in 24 hours an it happens on 1 of monitor instead od the 2 that I had before.

 

It is a lot better.

 

Thank you for your help

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222 Posts

08-02-2018

PH

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-05-30, 14:44 PM

Great to hear that. Hope it will work perfectly eventually. Just continue posting if you still have issue. We're here to help. 



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6 Posts

08-13-2019

CA

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-08-13, 16:03 PM

Lenovo released a Thunderbolt 3 Dock firmware update today (Aug 12 2019 update), get it here:

https://pcsupport.lenovo.com/us/en/downloads/DS506115

 

It seems to have solved this problem (for me, for now anyway). I also did a BIOS update and updated all drivers for my Carbon X1 6th Gen, I would recommend you do the same through the support website.

 

It was obvious this was a problem with the Dock itself. If you open the Windows Device Manager with the dock connected you could see (at least for me) the device list constantly refreshing - the dock was connecting/disconnecting devices constantly. 

 

From the release notes on the Aug 12 firmware update, the following fix:

2. DP : leaf_firmware_tbt3_Ver3_13_002.eeprom
		a. Fix the DP monitor keep flicking issue due to monitor keep reporting LIF

 

Hope this helps. 

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4 Posts

05-28-2019

CA

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-08-15, 15:54 PM

They finally did it!

 

Thanks a lot for this!

 

 

EDIT: I had a BSOD at the end but the Firmware is up to date.

 

 

I will try it out!

 

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6 Posts

08-13-2019

CA

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-08-15, 16:13 PM

Unfortunately, my hope that this would completely fix the problem has been dashed. After running for two days I experienced screen flashing again (once). I guess that is better than having the problem several times per day, if it happens rarely I guess I will learn to live with it. This is solved by unplugging the dock power and replugging. 

 

Let me know if this has solved the problem for you.

 

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4 Posts

05-28-2019

CA

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-08-20, 15:58 PM
Even after getting the BSOD during the update, the issue seems to be resolved. No more flickering since 5 days now

Sorry to hear that it did not work for you.
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2 Posts

09-27-2019

PL

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Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-09-27, 13:25 PM

Ok guys i have a lenovo thinkpad p1 and i was having this same issue, and i guess i was able to solve it.

 

What i did? 

 

1 - Updated the BIOS of the computer

2 - Update the firmware of the docking station

3 - Make a clean install of Nvidia drivers(in my case i have p1000)

4 - Uninstall the intel drivers from the 'device manager'

5 - Download the latest drivers from Intel website

6 - On the device manager again, install the drivers that were on the .zip file(from intel website) and i stopped having flickers

 

Best regards

 

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2 Posts

09-27-2019

PL

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  • Message 10 of 13

Re: Thunderbolt 3 Dock Issues (40AC) / Monitor Flickering / P52s

2019-10-10, 10:28 AM
Nop unfortunately didnt fix it for good
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