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matPROx
Paper Tape
Posts: 9
Registered: ‎12-31-2016
Location: PL
Views: 1,132
Message 1 of 12

YOGA 900s - is 4K possible on external TV display?

Hi, I'm surprised I cant reach 4K resolution on Yoga 900s connected to 4K TV? 

Why? I'm using USB-C to HDMI adapter. What should I do to get 4K? 

I can get only 1080p on TV as a main display.

On clone display mode resolution is set to 4K but in fact in TV is 1080p.

 

Retired Support Specialist
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Registered: ‎07-05-2016
Location: GB
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Message 2 of 12

Re: YOGA 900s - is 4K possible on external TV display?


@matPROx wrote:

Hi, I'm surprised I cant reach 4K resolution on Yoga 900s connected to 4K TV? 

Why? I'm using USB-C to HDMI adapter. What should I do to get 4K? 

I can get only 1080p on TV as a main display.

On clone display mode resolution is set to 4K but in fact in TV is 1080p.

 


Hi matPROx and welcome to the community,

 

The best is to use a cable with USB-C and DisplayPort male and connect the display directly. Any HDMI connection seems to reduce the Res.

 

Hope this help you and let us know how you get on


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matPROx
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Message 3 of 12

Re: YOGA 900s - is 4K possible on external TV display?

Hi, there is no display port in TV. Do You know is it possible to connect external 4K TV to Yoga900s using USB-C to hdmi cable? Where is specification of Lenovo 900s graphics card - which resolution is it support?
Lenovo Technology Partner
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Location: PH
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Message 4 of 12

Re: YOGA 900s - is 4K possible on external TV display?

Hi matPROx,

Just to clarify what is the max resolution that your TV can display? Have you already tried just using the TV as a single display and then setting the resolution to 4K.

As per the Hardware Maintenance Manual of the system, page 28, the internal display can be 1080p or 1440p depending which model you bought. The GPU for the system is an Intel® HD Graphics 515, which should support 4K via HDMI ver 1.4.  

Also can you try doing an extended display on the TV and check if you can get a 4K resolution on it. 

Hope to hear from you soon.

Cheers, 

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matPROx
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Message 5 of 12

Re: YOGA 900s - is 4K possible on external TV display?

Yoga 900s (80ML0066PB) - intel HD 515 and Intel Core M5-6Y54 (1.1 GHz, 2.7 GHz, 4 MB Cache).

TV 4K new Sony Bravia, 4K works perfect on other laptop on HDMI-HDMI at 4K 60p

In theory it should run in 4K at 30p using USB to HDMI adapter.

 

It doesnt work as single, double and extended.

Max resolution which I can set on TV is 1080p60.

I cant even add not standard resolution.

 

But Im worry about one thing...you saying the HDMI version must be 1.4? I have HDMI 2.0 everywhere, so it means it is not supported? 

Lenovo Technology Partner
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Message 6 of 12

Re: YOGA 900s - is 4K possible on external TV display?

Hi,

 

Not realy,  what driver version do you have for your display adapter? Have you tried updating the driver from Intel.com. 

 

Cheers,

 

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matPROx
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Message 7 of 12

Re: YOGA 900s - is 4K possible on external TV display?

After install latest driver 21.20.16.4542 I can set QHD resolution on 4K display 2560x1440@29 and 30p BUT it doesnt work in fact. The picture is smaller than TV screen, I can not set this resolution on full screen. I cant still add 4096x2160 24p resolution.

matPROx
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Message 8 of 12

Re: YOGA 900s - is 4K possible on external TV display?

Question is did anyone do it succesfull? IN PRACTISE, not in theory or specyfications - display 4K form 900s?

matPROx
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Message 9 of 12

Re: YOGA 900s - is 4K possible on external TV display?

So, the fact is Yoga900s does not support higher resolution on external display than FHD 1920x1080@p60 at HDMI.

Lenovo probably block this function because of heating or something. Why they wont say that on spec? I have to sell this laptop asap...

SeniorGuru
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Message 10 of 12

Re: YOGA 900s - is 4K possible on external TV display?

the fact is Yoga900s does not support higher resolution on external display than FHD 1920x1080@p60 at HDMI

 

1. My Y900s drives a 1920x1200 display quite nicely.

 

2. Other recent models, e.g. ThinkPad E470 and E570, are also officially supported only up to 1920x1200 even though people have reported that they can drive them at 2560x1440 resolution but only on 30Hz refresh rate. That includes both integrated and discrete GPU models. 

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