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12-21-2018

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X380 + USB-C Dock + 2 external monitors

2018-12-21, 16:20 PM

Hello.

Hoping you can help me here...

I have an X380 Yoga with the USB-C dock.  I bought 2 ACER monitors, each with 2 HDMI ports.  Using HDMI-to-DisplayPort adapters, I have both plugged in to the dock, yet I can only get one of the monitors to actually display anything.  This is all being with my laptop display in use, so I'm not sure if that is coming into play.

 

Any assistancce/insight you can provide would be GREATLY appreciated.


Thanks,

Barry

Daphne, AL

 

Moderator note: post moved to X forum.  Subject edtited to reflect model.  Was:  Re: Yoga 370 & Type C Dock with 3 monitors

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Re: X380 + USB-C Dock + 2 external monitors

2019-01-29, 17:26 PM

Hi blt4al! Welcome to our forums community. Are you referrring to this particular USB C docking station: https://support.lenovo.com/us/en/accessories/ACC100348? If yes, base on the setup and manual, you can only use 1 external monitor for the display port. You can use the VGA port for the second monitor. Please refer to the link below for the setup: https://support.lenovo.com/us/en/accessories/ACC100348 and the user guide here: https://download.lenovo.com/pccbbs/options_iso/tp_usbc_dock_sp40l36280_ug_en.pdf. 



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6 Posts

05-31-2019

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Re: X380 + USB-C Dock + 2 external monitors

2019-05-31, 18:45 PM

I have a Yoga X380 connected to a USB-C dock. When turn Yoga on either from the Yoga or the dock, the displays will not come up. Both external monitors are connected to the displayports on the dock. Now if you turn on the Yoga first and let it come up to a login screen before connecting it to the dock, when you make the connection all 3 displays come up. I have updated the dock and the Yoga and it is not working correctly. Does anyone have any ideas?

 

Thanks,

Kimtech

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6 Posts

05-31-2019

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Re: X380 + USB-C Dock + 2 external monitors

2019-05-31, 18:48 PM

I read the documentation that was listed and could not find any information that, if you have 2 external monitors then you have to use one on displayport and the other on vga. Please clarify?

 

Thanks,

Kimtech

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Re: X380 + USB-C Dock + 2 external monitors

2019-05-31, 23:42 PM

Hi!

 

Thanks for posting in the Community,

 

Either one for Display Port and one in VGA port, or one monitor for each Display Port. May we know if you're using a VGA / DP connection for both the monitors or it is HDMI capable and you're using an adapter? Kindly download the Thinkpad Monitor INF File, Intel Thunderbolt Driver, and Intel Alpine Ridge Thunderbolt Firmware here,

 

https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-x-series-laptops/thinkpad-x380-yoga/downloads

 

Update us how it goes.

 

Regards,



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6 Posts

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Re: X380 + USB-C Dock + 2 external monitors

2019-06-03, 12:55 PM
The monitors are connected directly to the DP ports on the dock. No adapters used and no vga connection.
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175 Posts

09-06-2018

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Re: X380 + USB-C Dock + 2 external monitors

2019-06-03, 16:44 PM

Hello!

 

For troubleshooting purposes and to isolate the problem. Are the monitors working if plugged in directly to the laptop without the usb-c dock? Knowing  the model of the usb-c could also help. 

 

 

 



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6 Posts

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Re: X380 + USB-C Dock + 2 external monitors

2019-06-03, 16:59 PM

If I turn on the X380 first and let it come up and then plug it into the dock then the monitors will come up. The dock is the Thinkpad USB-C dock type# 40A9

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Re: X380 + USB-C Dock + 2 external monitors

2019-06-03, 17:01 PM

Per Hectors information I installed the Thinkpad monitor inf, the Intel Thunderbolt driver, and the Intel Alpine Ridge Thunderbolt firmware, but nothing changed.

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6 Posts

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Re: X380 + USB-C Dock + 2 external monitors

2019-06-05, 14:21 PM

I have tried the suggestions given so far and it is still not working properly. Any other ideas?

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