Miracast Support on Custom Build PCs

Question

Dear Microsoft Community,

I'm attempting to Miracast from a custom built pc running Windows 8.1 to a Samsung Smart TV.  As far as I'm aware this should, in principle, be achievable.  However for the past few days I have been unsuccessful at achieving this and through endless searching of forums and following useful Microsoft guides such as the ones here and here I am still yet to achieve any success.

I have tried to extract the solution from across comments in the online community but have been unable to do so.  For this reason I post this question with the aim of obtaining technical support and guidance as well as the exact requirements in order to successfully Miracast from a custom built desktop PC.

In short, I have an ASUS P9X79 DELUXE motherboard with a built-in Atheros AR9002WB-1NG Wireless Network Adapter.  With this I am using 2 x GeForce GTX 560 Ti graphics cards in a SLI configuration.  Originally the PC was loaded with Windows 8 before being upgraded to Windows 8.1.  I can provide any further details on request.

I have tried updating my drivers to the latest version and using alternative wifi adapters to affect Ndis version.  I have also attempted to Miracast with SLI disabled and mostly .  From dxdiag and PowerShell:

Ndis Version: 6.30 (6.40 with alternative wifi adapter)

WDDM: 1.3

I note from a previous blog linked above that an Ndis version of 6.40 is required to successfully Miracast so I connected an Edimax EW-7811UN in order to raise the version.  I also attempted disabling all other network adapters to see if this had any affect which it didn't.

I'm still in the position where I attempt to project through the charms menu and I am not presented with an option to "Add a wireless display".  I have attempted to meet the requirements in order to successfully Miracast and have completed all the troubleshooting I can think of with no success.  I'd appreciate any help with this problem in order to get Miracast working.

My only remaining thought is that the network/graphics devices are not compatible with Miracast despite meeting version requirements.  I recall from one of the blogs that the devices must be enabled by the IHV and OEM for Miracast however I am unsure of how to explicitly confirm this.  Any guidance would again be appreciated in this matter as I will need to be aware of this in any future custom builds that I make.  For the short term I'm looking to rectify the device/driver problem in order to get Miracast working.

Thanks in advance.

Answer 1

It's an AMD Phenom ll 1045t, the wireless adapter i just had laying around I'm surprised it worked.

Answer 2

Hi,

Thank you for contacting Microsoft Community.

I understand it’s frustrating when things do not work as expected.

Miracast is a wireless technology which works with Miracast enabled devices.

Please confirm if your hardware has the Miracast capability and if the Samsung TV that you use has the Miracast capability.

Refer the links below to know about normal TV which do not have Miracast support.

To Use Miracast you should have an adapter connected to the TV which is showed in the link below.

            http://www.microsoft.com/hardware/en-us/p/wireless-display-adapter

Please refer the link below to setup the Miracast.

http://blogs.windows.com/bloggingwindows/2014/09/23/announcing-the-microsoft-wireless-display-adapter/

You can refer the link below for additional information.

http://blogs.msdn.com/b/matt-harrington/archive/2014/05/02/how-to-project-from-a-computer-to-a-tv.aspx

please reply to us if you need further assistance.

Answer 3

Thanks a lot for your reply.  The TV I own already has Miracast support, the trouble comes when I use the projection shortcut (Windows Key + P) and am not presented with the option to "Add a wireless display".  Some further digging within a dxdiag printout produced this:

---

Display Devices

---

Card name: NVIDIA GeForce GTX 560 Ti

Manufacturer: NVIDIA

Chip type: GeForce GTX 560 Ti

DAC type: Integrated RAMDAC

Device Type: Full Device

Device Key: Enum\PCI\VEN_10DE&DEV_1200&SUBSYS_838B1043&REV_A1

Display Memory: 4043 MB

Dedicated Memory: 971 MB

Shared Memory: 3071 MB

Current Mode: 1680 x 1050 (32 bit) (60Hz)

Monitor Name: Generic PnP Monitor

Monitor Model: LE22A3

Monitor Id: BTC22A3

Native Mode: 1680 x 1050(p) (59.852Hz)

Output Type: HD15

Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um

Driver File Version: 9.18.0013.4475 (English)

Driver Version: 9.18.13.4475

DDI Version: 11

Feature Levels: 11.0,10.1,10.0,9.3,9.2,9.1

Driver Model: WDDM 1.3

Graphics Preemption: DMA

Compute Preemption: DMA

Miracast: Not Supported by Graphics driver

Hybrid Graphics GPU: Not Supported

Power P-states: Not Supported

Driver Attributes: Final Retail

Driver Date/Size: 11/13/2014 00:20:36, 19966344 bytes

WHQL Logo'd: Yes

I've truncated the remaining readout as it didn't seem particularly relevant.  The key point to highlight is the

Miracast: Not Supported by Graphics driver

line which indicates that it's a hardware compatibility issue.  Since I make custom built PCs the trouble I've got is how to either make my current hardware compatible or determine what desktop graphics cards on the market are able to support Miracast so that I can make the necessary upgrade.

How do I determine which Nvidia or AMD graphics cards are able to support Miracast on a desktop PC?

Or, what is it that I'm missing from my current setup in order to allow my current graphics card to support Miracast?

Answer 4

Miracast requires a display adapter which supports Windows Display Driver Model (WDDM) 1.3, and a Wi-Fi adapter that supports Wi-Fi Direct.

Answer 5

I had hoped I had made it clear that I understood this from my first post - I apologise if this isn't the case.  My display adapter (Nvidia Geforce 560 Ti) supports WDDM 1.3 and my built-in wifi adapter has an Ndis version of 6.3.

It may be possible that it doesn't support wifi direct as you describe but after some trawling through searches and device settings I haven't been able to uncover explicitly whether or not my device supports this.  Advice on how to confirm this explicitly would be appreciated.

If I'm required to invest in a different wireless adapter I'd like to confirm that all display adapters that supported WDDM 1.3 will work with Miracast however I have a feeling that it won't be as simple as that.  Again, guidance appreciated.

Thanks for the support.