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01-08-2019

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P51 on ThinkPad 90W Ultra Dock not detecting monitor

2019-01-08, 9:40 AM

Hi, 

 

I'm using a Lenovo P51 with M2200 graphic card and have a docking station 40A2. I wish to connect the two monitors to my docking station, one is VGA cable and another one is HDMI. When I dock my P51 to the docking station, the monitors could not be detected. I tried to configured my bios setting to discrete graphic setting but nothing changed. Try to put shared on dock display also but nothing works. 

 

When I connected one of the monitor HDMI cable to the laptop directly without going through the docking station, it works perfectly but I could not connect the VGA cable monitor to the laptop without a converter and it defeat the purpose of having a docking station. 

 

Anyone encounter this problem and has a solution for this problem? 

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6 Posts

09-13-2018

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Re: P51 on ThinkPad 90W Ultra Dock not detecting monitor

2019-07-17, 16:01 PM
Same problem. Waiting for service..
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1815 Posts

08-02-2018

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Re: P51 on ThinkPad 90W Ultra Dock not detecting monitor

2019-07-17, 20:56 PM

Hi there! The P51 is not listed as a compatible device to the ThinkPad 90W Ultra Dock. You can check it here: https://www.lenovo.com/us/en/accessories-and-monitors/docking/mechanical-docks/ThinkPad-Ultra-Dock-90-W/p/40A20090US.



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2 Posts

01-08-2019

MY

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Re: P51 on ThinkPad 90W Ultra Dock not detecting monitor

2019-07-18, 1:17 AM

Hi there, 

 

Just to update so that other people could benefits from the same problem. I've fixed the problem by sending the laptop back to lenovo service center. They identify that it is motherboard defect and change the whole motherboard for me. After swapping out with a new mother board, problem fixed and now i have 2 monitors connected without a problem. 

 

Hope this could help. 

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6 Posts

09-13-2018

ES

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Re: P51 on ThinkPad 90W Ultra Dock not detecting monitor

2019-07-18, 3:55 AM
I've the 230W version of the Docking Station (40A50230EU). I'am very annoyed.. It has been working for a year without problems..
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