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eqassem
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Posts: 6
Registered: ‎08-02-2012
Location: Albuquerque NM
Views: 23,286
Message 1 of 9

t420 dual external monitors

Hi,

 

Can a T420 with Intel graphics run 2 external monitors at 2560x1600 (via display ports) using a minidoc series 3?

 

Thanks,

 

-Emran

Retired Support Specialist
Posts: 524
Registered: ‎07-19-2012
Location: Raleigh, NC
Views: 23,229
Message 2 of 9

Re: t420 dual external monitors

That should work according to this document entitled NVIDIA Optimus - ThinkPad Multiple Monitor Configurations:

 

http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-76617

 

Hope this helps.

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eqassem
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Registered: ‎08-02-2012
Location: Albuquerque NM
Views: 23,223
Message 3 of 9

Re: t420 dual external monitors

Problem is I don't have an NVIDIA graphics card....  I have the onboard intel graphics

Retired Support Specialist
Posts: 524
Registered: ‎07-19-2012
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Views: 23,219
Message 4 of 9

Re: t420 dual external monitors

Sorry I misread.  Yes, you can, but the laptop LCD is disabled.

 

http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-72871

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eqassem
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Registered: ‎08-02-2012
Location: Albuquerque NM
Views: 23,184
Message 5 of 9

Re: t420 dual external monitors

Thanks,

 

I'll buy me 2 30 inch 2560x1600 monitors and see how it goes.

 

-Emran

Retired Support Specialist
Posts: 524
Registered: ‎07-19-2012
Location: Raleigh, NC
Views: 23,175
Message 6 of 9

Re: t420 dual external monitors

Great.  Let us know if you have any other help.

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eqassem
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Registered: ‎08-02-2012
Location: Albuquerque NM
Views: 23,122
Message 7 of 9

Re: t420 dual external monitors

It worked, I have experienced it with my own eyes. 2560x1600 on both 30 inch monitors using one Displayport on the mini series 3 docking station and one Displayport on the side of the laptop.

Thanks :-)
Retired Support Specialist
Posts: 524
Registered: ‎07-19-2012
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Views: 23,115
Message 8 of 9

Re: t420 dual external monitors

I'm glad it worked out for you.

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Phi-Dang
What's DOS?
Posts: 1
Registered: ‎08-25-2016
Location: US
Views: 8,822
Message 9 of 9

Re: t420 dual external monitors

Can we connect T420 with a MiniDock Series 3 to 3 monitors:

 

-- 2 LG 29 inches

-- 1 Lenovo 23 inches

 

I can have three screen up but one LG only get 1024 x 760 only or two LG screens with 2560 x 1600

 

Currently, I have three screens on with the following resolutions:

 

-- 1st LG 29inches: 2560 x 1080

-- 2nd LG29inches: 1024 x 768

-- 3rd Lenovo23inches: 1080 x 1920

 

Any advise to get all three screen up and running with best resolution?

 

My connection:

-- 2 Display port from Dock to 2 LG screens

-- 1 VGA port from Dock to Lenovo screen

 

Thanks, 

 

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