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jackie528
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Registered: ‎10-13-2012
Location: usa
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Message 1 of 21

Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

The ThinkPad Multiple Monitor Configurations pdf (LINK) says the DVI port  on thinkpad Mini Dock Series 3 only support up to 1920x1200, but I would like to connect the DVI-D port to a external monitor with 2560x1600 resolution.  Will it work?  I am planning to buy a T420 with a discrete Nvidia Optimus video card and a mini dock series 3.  Yes, I can't use the display port because the external monitor only have DVI-D port.  I knew that the DVI-D port is able to support 2560x1600 resolution as long as the video card support it, I don't understand why the DVI-D port on the thinkpad mini dock series 3 can only support  up to 1920x1200 even though the Nvidia Optimus Technology is powful enough. Please share your experience and suggestions.  thanks.

 

ThorsHammer
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Message 2 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

What external LCD panel are you using?

jackie528
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Message 3 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

catleap 27 inch LCD.  It only has the DVI-D port. 

lead_org Microsoft MVP Contributor
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Message 4 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

DVI port on the dock is single link only (so it won't support the resolution you need), while the Displayport on the dock can support the dual link resolution you need.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
jackie528
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Message 5 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

yes, you are right.  it says it's DVI-D single link on lenovo, but the image of mini dock series 3 clearly shows the DVI-D port is dual link.  here are some images.  I am quite confused.

 

DVI-D port types:

DVI types

 

here is the DVI-D port on mini dock series 3: 

ThinkPad_Mini_Dock_Series_3

thinkpad mini dock plus series 3:

 

Mini dock plus series 3

 

lead_org Microsoft MVP Contributor
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Views: 74,498
Message 6 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

Then you should try it.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
jackie528
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Views: 74,487
Message 7 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

I am not sure about the answer at all.  I am just so confused.   That's why I was posting this question here.  I thought the lenovo tech will come here and give answers to my qustion.  lenovo, please help!!! Why does your company label a DVI-D dual link port as DVI-D single link?  It just doesn't make any sense. 

lead_org Microsoft MVP Contributor
Microsoft MVP Contributor
Posts: 21,009
Registered: ‎12-19-2008
Location: Australia, Melbourne
Views: 74,476
Message 8 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

As said the dvi-d port on the dock only operates in single link mode. Dont rely on the photo as it is for illustration purpose only.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
jackie528
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Message 9 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?

Oh, I see.

 

OK, for the people with similar question, there is the final conclusion based on lead_org's response:

 

For the DVI-D port on lenovo mini dock series 3:

 

It only has the DVI-D single link function, but it has the same appearance as DVI-D dual link port, as you can tell the images I have uploaded.  Some on-site image of mini dock I have searched shows the same DVI-D dual link appearance. 

 

The DVI-D single link port on mini dock series 3 only support up to 1920 resolution, even though the appearance of the port is same as DVI-D dual link.  Only DVI-D dual link port can support up to  2560 resolution.

 

Buyer beware please! 

 

 

ThorsHammer
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Message 10 of 21

Re: Does the DVI port on thinkpad Mini Dock Series 3 (T420) support 2560x1600 resolution?


@jackie528 wrote:

Buyer beware please! 

 

 


Yes. Buy LCD panels with DisplayPort.

 

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