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Richard_M
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Registered: ‎02-27-2018
Location: CA
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Message 1 of 11

Thinkpad P51, how many external monitors?

How many external monitors does this machine support simultaneously, without a dock?

It is a December 2017 / January 2018 build P51, with an NVIDIA Quadro M1200 4GB GDDR5 graphics card.

Native display is 3840x2160.

Available display ports are HDMI, Mini DisplayPort, and USB-C.

Operating system is Windows 10 Pro.

 

Thanks in advance.

al_mcg
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Message 2 of 11

Re: Thinkpad P51, how many external monitors?

Any answer for this question?
Community SeniorMod
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Message 3 of 11

Re: Thinkpad P51, how many external monitors?

Hello,

 

From the ThinkPad P51 Platform Specifications:


Graphics Intel HD Graphics 630 or P630 in processor and
NVIDIA Quadro® M1200 or M2200, 4GB memory;
supports external digital monitor via HDMI, Mini DisplayPort, or Thunderbolt™;
supports four independent displays;
Max resolution: 3840x2160@60Hz (DisplayPort via Mini DisplayPort cable);
3840x2160@60Hz (Thunderbolt); 4096x2160@24Hz (HDMI)

Source: ThinkPad P51 Platform Specifications [PDF]

 

Regards,

 

Aryeh Goretsky

 



I am a volunteer and neither a Lenovo nor a Microsoft employee.

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derek_shnosh
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Message 4 of 11

Re: Thinkpad P51, how many external monitors?

I have three external + the LCD, while docked; albeit on a P51 with an M2200.

 

(1) 4K @ 60Hz via USB-C

(2) 2560x1440 @ 60Hz; one via display port, one via HDMI.

... then the laptop LCD.

 

With exception to the screen flicker, it works well in Win10 and Kubuntu10 with Nvidia driver. More pics...

 

9bLE0ZH.jpg

crendon
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Message 5 of 11

Re: Thinkpad P51, how many external monitors?

That's a pretty cool setup @derek-smiley.

The only thing that (for me) would drive me crazy is the inconsistencies on HDPI when monitors of different resolutions are used (certain apps would look fuzzy when moved to monitors that are not the primary).

This of course is not Lenovo's fault; but Microsoft's. I'm baffled they haven't figured out a way to do this. I love Windows 10 and am a proficient MacOS user (prefer Windows believe it or not). But MacOS figured it out long ago...
derek_shnosh
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Message 6 of 11

Re: Thinkpad P51, how many external monitors?

I don't have that issue at all in windows or Linux... Scaling disabled.

tjanum
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Message 7 of 11

Re: Thinkpad P51, how many external monitors?

Which dock are you using?
derek_shnosh
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Message 8 of 11

Re: Thinkpad P51, how many external monitors?

Thinkpad Workstation 230W Dock (http://a.co/e9zxofo).

 

Edit: Worth noting that the 4K screen connected via USB-C is connected directly to the laptop; the dock does not have a USB-C connector.

tjanum
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Message 9 of 11

Re: Thinkpad P51, how many external monitors?

Brilliant, just the info I was looking for. Cheers.
JTree
What's DOS?
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Registered: ‎11-05-2018
Location: US
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Message 10 of 11

Re: Thinkpad P51, how many external monitors?

Derek,  I am trying the same setup you are and it will not pick up the 3 monitor via USB-C / HDMI or Mini Displayport on the laptop?

 

Did you have to enable those while docked somewhere?

 

 

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