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lidanh
Paper Tape
Posts: 7
Registered: ‎10-17-2013
Location: Israel
Views: 14,794
Message 1 of 18

Yoga 13 - Windows 8.1 final - Miracast not working

Hi there,

 

I have just installed the final version of Windows 8.1.

The thing I've moserly been waiting for is Miracast.

 

As for now when I search for wireless displays (Add new device menu) it doesn't appear to find my TV. (An unpaired Android device can)

 

I'm thinking about driver issues with 8.1.. Did anyone already tried it?

 

Thanks,

Lidan.

jstigall
Fanfold Paper
Posts: 10
Registered: ‎10-17-2013
Location: USA
Views: 14,770
Message 2 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

You have to have a miracast compatible wifi card.  The is no way the **bleep**ty realtek card will work for that.

lidanh
Paper Tape
Posts: 7
Registered: ‎10-17-2013
Location: Israel
Views: 14,721
Message 3 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

Thanks for your reply.

 

Are you 100% on this?

Please look at the following blog post that covers the requirements of Miracast:

http://withinwindows.com/within-windows/2013/6/30/windows-81-features-miracast-wireless-display-tech...

 

As per the article, the WiFi NDIS version should be higher than 6.3 to support Miracast. It appears that my Yoga has a 6.4 NDIS version. (So it should be OK).

 

One more thing I need to mention is that I played with the drivers and instlled to old once to check some stuff.

When I installed the old once, the menu of "Search for wireless displays" disappeared from Windows 8.1 menu.

It means that the driver must support it then, right?

 

Waiting for more input...

Thanks.

jstigall
Fanfold Paper
Posts: 10
Registered: ‎10-17-2013
Location: USA
Views: 14,673
Message 4 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

The wifi chipset itself has to support it as well, not just the driver level. Any card, even the oldest cards can support that driver level, that doesn't mean Miracast will work.

lidanh
Paper Tape
Posts: 7
Registered: ‎10-17-2013
Location: Israel
Views: 14,668
Message 5 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

Hi,

 

Do you have any proof somewhere? Is it documented anywhere?

 

And BTW: If I want to buy a WiFi USB Dungle to stream my desktop with Miracast, how do I know if its chipset supports it?

 

Thanks,

Lidan.

carlaron
Blue Screen Again
Posts: 9
Registered: ‎02-09-2013
Location: Germany
Views: 14,659
Message 6 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

same Problem here: tried to connect to a Panasonic BDP-234

using new MS Win 8.1 Drivers from microsoft i see the "detect wireless display", but it does not find any.

 

going to lenovos drivers from Oct. 16. that option diaspears.

 

 

any solutions?

lidanh
Paper Tape
Posts: 7
Registered: ‎10-17-2013
Location: Israel
Views: 14,511
Message 7 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

Hey,

 

just to note that I still haven't got a final answer regarding this. I did see any document that says that the WiFi chipset does not support Miracast. 

 

Still waiting for an official answer.

 

Thanks,

Lidan.

lidanh
Paper Tape
Posts: 7
Registered: ‎10-17-2013
Location: Israel
Views: 14,239
Message 8 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

Just want to mention that DirectX confirms that Yoga 13 Supports miracast.

 

Still, I don't know why it doesn't work.

jstigall
Fanfold Paper
Posts: 10
Registered: ‎10-17-2013
Location: USA
Views: 14,235
Message 9 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

DirectX is telling you that the intel graphics card supports it.  The wireless card needs to be fully miracast capable and certified, and I'm just going to take a stab in the dark here and guess that the USB realtek adapter, that you can barely find mention of anywhere on the internet, lenovo shoehorned into this laptop isn't compatible.

jstigall
Fanfold Paper
Posts: 10
Registered: ‎10-17-2013
Location: USA
Views: 14,224
Message 10 of 18

Re: Yoga 13 - Windows 8.1 final - Miracast not working

Lets take a look at two wifi certifications, one for the Surface 2 tablet:

Surface 2

 

And one for this chipset:

RTL8723AE

 

I can't find a certification for the yoga itself, but the chipset will do.  Notice how it's missing wifi direct and miracast?

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