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08-15-2016

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USB 3.0 Ultra dock with two monitors - 4k issues

2016-08-15, 18:01 PM

Hello,

I'm currently running a W540 with a ThinkPad USB 3.0 Ultra Dock 40A80045US (also wanting to run it with other PCs).  I used to run the Pro Dock, but decided to upgrade because it said the USB Ultra Dock supports 4k monitors externally.  I currently have 2 monitors connected to the USB Ultra Dock via HDMI (1.4) and DP.  Neither of the monitors are running higher than the 'recommended' resolution of 2048x1152.

 

I have updated all the drivers I can think of (DisplayLink and USB Ultra Dock) but still no luck.

 

Any help is appreciated!

 

Thanks!

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2043 Posts

02-28-2012

EC

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Re: USB 3.0 Ultra dock with two monitors - 4k issues

2016-08-21, 2:23 AM

Hi.

 

I don't have this dock or a 4K monitor, so this is only what I searched about it.

 

Here it is the support site for the "ThinkPad USB 3.0 Ultra Dock".

https://support.lenovo.com/ec/es/documents/acc100183

 

According to the manual, page 20 ,  (Table 3. Supported resolutions and refresh rates: DP and HDMI simultaneous output) the 2048 x 1152 resolution at 60hz for both outputs at the same time is the maximun supported. So with both monitors connected I don't think you can get a higher resolution.

 

What is your issue? Do you want to run both monitors at the same time at a higher resolution? Or does not work at 2048 x 1152 ?

 

Regards

 

 









Martín Itúrbide
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5 Posts

10-01-2016

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Re: USB 3.0 Ultra dock with two monitors - 4k issues

2016-10-01, 16:47 PM

I have a Thinkpad USB 3.0 Dock.  This was working fine as of yesterday, withTWO external monitor, one being Samsung 55" 4K (UN55JU650DF XZA), and another smaller monitor.

 

I got an AUTOMAC Windows 10 update, and my Windows 10 is now -->  Windows 10 Pro Version 1607.  After this update, the "Thinkpad USB 3.0 Dock" no longer can display on Samsung 55", but the smaller monitor works fine via the "Thinkpad USB 3.0 Dock".  The message I get for Samsung 55" 4K, is "resolution not supported".  I think it has nothing to do with resolution becasue I tried all available resolutions.

 

The latest driver for "Thinkpad USB 3.0 Dock", at "https://support.lenovo.com/us/en/documents/pd023761", does NOT solve the problem.  I de-installed everything per "https://support.lenovo.com/us/en/solutions/HT078204?LinkTrack=Solr" and install everything again, and NO luck.

 

Thanks

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6 Posts

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Re: USB 3.0 Ultra dock with two monitors - 4k issues

2016-10-19, 20:09 PM
Thanks Martin, I ended up finding out the issue. While i didn't have 4k supported HDMI cables, i didn't realize that Lenovo quietly states that you can run a 4k monitor, meaning only one monitor, does not support 2 4k monitors.
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6 Posts

08-15-2016

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Re: USB 3.0 Ultra dock with two monitors - 4k issues

2016-10-19, 20:11 PM

Thanks for the information, I was mistaken when I thought i had a 4k capable HDMI cables, but didn't.  Also, didn't realize it only supports ONE 4k monitor at a time.

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9184 Posts

09-04-2014

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Re: USB 3.0 Ultra dock with two monitors - 4k issues

2017-10-31, 5:15 AM
 

Andy

 

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