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38 Posts

02-20-2015

Germany

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Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-04-21, 16:57 PM

Plugging an HDMI-connector into the micro-HDMI port on the side of the tablet works perfectly okay. 

 

The same monitor, plugged into the mini-Display-port on the Ultrabook Pro keyboard dock (the one with extra battery et al) does not work properly. This display only comes up after W10 has logged me in; and then it only goes up to 1920x1080; while the monitor does 2560x1440; including through the micro-HDMI on the side of the convertible. At 2048x1152 it produces a flattering image, like a TV from the 50s with a sync problem (see attachment).

And then after some 5 to 10 minutes the displays goes black ("No input signal"). It still DOES try something, as you see the display changes size and position forth and back. The 'extending the display' becomes visible at times, but can't be reached any longer to be (re)set.  

 

I have already tried to swap the cable, to no avail. 

 

Happy to hear any workaround, or other solution,

 

Uwe

 

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3722 Posts

01-08-2021

Philippines

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Re:Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-04-21, 20:49 PM

Hello udippel,

 


Greetings

 

Have you updated the drivers, BIOS and firmware thru the support site?
What other troubleshooting steps have you tried so far?

 


Regards, 
Lorenzo_Lenovo



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38 Posts

02-20-2015

Germany

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Re:Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-04-21, 21:04 PM
Yes, updated W10, updated the Lenovo (via Service Bridge). BIOS is 2.12. Drivers, though updated, shouldn't matter too much: The 'lenovo' boot screen ('tap or press Enter ..' ) shows on a monitor connected to micro-HDMI, but also not on the mini-Display port. Other try: Being a *nix user, I also booted to *buntu 20_04. The screen isn't seen at all (dmesg, xrandr) when connected to mini-DisplayPort; works perfectly okay with the micro-HDMI on the side of the tablet. Therefore I rather think, it is a BIOS thingy.
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3722 Posts

01-08-2021

Philippines

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Re:Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-04-30, 21:33 PM

I suggest that you share the machine type model / MTM (ex. 81C70000RK) from the sticker as it would help us detail more about your machine variant.
Do include the docks model number too and monitor.
Did the Ultrabook keyboard also came with the machine?  

 


Regards, 
Lorenzo_Lenovo



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38 Posts

02-20-2015

Germany

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  • Message 5 of 8

Re:Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-05-06, 10:54 AM

Helix 2, Serial ********

 

The Type of Dock states ThinkPad Helix Ultrabook Pro Keyboard, Compliance TP00065K1.

There is a sticker with absolutely tiny characters; I THINK 8SSBB0F2360711R959S8PHZ

 

There is no visible sticker on the tablet, but the serial number is mentioned above. I have no idea which 'dock' you mean; except the keyboard dock as the one I mentioned?

 

The tablet (convertible) can be placed into the keyboard dock. This keyboard dock ('ultradock') came with the tablet as complete convertible.

It has plugs for power, USB 3.0, Kensington key hole and that mini-Displayport plug. It also contains a second battery. And the way in which it does NOT work, as described, is sitting in that dock, the dock connected to to the power supply; thereby also powering the removable tablet, and the monitor connected through the mini-Displayport. When I remove the mini-Displayport plug and connect the same monitor, same input, to the micro-HDMI on the side of the tablet, it works fine. 

 

That display is a VX3276-QHD.

 

Edit notes: Removed SN for member's protection 

Helix (Type 20CG, 20CH) Laptop (ThinkPad) - Type 20CH  Machine Type Model:20CHS10P02 0 spidey101

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3722 Posts

01-08-2021

Philippines

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  • Message 6 of 8

Re:Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-05-13, 16:42 PM

I would suggest to have this issue reported to the technical team specially with the dock so that proper resolution can be provided.

 


Regards, 
Lorenzo_Lenovo



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4 Posts

02-12-2019

Sri Lanka

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  • Message 7 of 8

Re:Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-07-21, 20:55 PM

Any resolution that you got for this issue. I have the same issue that when i connect the display port on the keyboard dock, the monitor is detected but nothing comes on the second (external display). Even when i change to only second display the monitor reports as no device connected, same as the issue you had mentioned.

 

Same cable works fine on my Lenovo T460 so i know the cable and monitor are fine. 

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3722 Posts

01-08-2021

Philippines

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  • Message 8 of 8

Re:Helix 2 (20CG 20CH) in Ultrabook Pro keyboard dock does not display via mini-Display-port

2021-07-28, 18:02 PM

Hello everyone,

 


My apologies for the delayed reply.

 


As mentioned above, you can report it to the tech team in your region.
Kindly wait for upcoming updates from the support site.
Likewise, the same feedback button on the site can help.

 

 

Regards, 
Lorenzo_Lenovo



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