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buggyro
07-11-2014, 10:10 PM
Hello,
I have Asus G750JM with Broadcom AC adapter. I installed Win 8.1 Pro, with drivers from Asus website. I tried to add as a wireless display a LG Smart TV and a Netgear PTV3000. Both appear when searching for wireless displays but fail to connect after about 20 seconds.

Both the LG TV and the PTV3000 work with an Intel WIDI laptop, and with Android devices with Miracast.

Windows has the latest updates from Windows update.

I am at a loss, i don't know what to try anymore.

Thx in advance

hmscott
07-12-2014, 01:26 AM
Hello,
I have Asus G750JM with Broadcom AC adapter. I installed Win 8.1 Pro, with drivers from Asus website. I tried to add as a wireless display a LG Smart TV and a Netgear PTV3000. Both appear when searching for wireless displays but fail to connect after about 20 seconds.
Both the LG TV and the PTV3000 work with an Intel WIDI laptop, and with Android devices with Miracast.
Windows has the latest updates from Windows update.
I am at a loss, i don't know what to try anymore.
Thx in advance

buggyro, I noticed the new Nvidia driver 340.43 BETA has a new install item, Miracast Virtual Audio, you might try this driver to see if it has better Miracast support.

38805

With Optimus, you might need the Miracast support from the Intel driver instead:

Intel Miracast* FAQ - How do I initially set up a wireless external screen in Windows 8.1?
http://www.intel.com/support/graphics/sb/CS-034563.htm

Intel® Wireless Display (Intel® WiDi)
http://www.intel.com/p/en_US/support/highlights/wireless/wireless-display

BETA Intel driver - Version: 15.36.0.3652
https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=23985&lang=eng&OSVersion=Windows%208.1%2C%2064-bit*&DownloadType=Drivers%20%28Beta%29

buggyro
07-12-2014, 07:09 AM
hmscott the intel widi tool says "WiDi is ready to use".
However not even with the beta Nvidia and Intel Graphics drivers, the problem is the same.

If anyone tries to install the beta drivers create a restore point before. I had a few blue screens after installing the Nvidia beta driver.

hmscott
07-12-2014, 07:37 AM
hmscott the intel widi tool says "WiDi is ready to use".
However not even with the beta Nvidia and Intel Graphics drivers, the problem is the same.
If anyone tries to install the beta drivers create a restore point before. I had a few blue screens after installing the Nvidia beta driver.

buggyro, what were you doing when you got the Blue screens? So far no one has reported crashes with 340.43 except under gaming load. I am haven't had any Blue screens, but I don't currently have all the options installed, just these:

38822

Did you follow the directions in the FAQ?

Did anything change in the behavior? Same as you reported in your first post?

There could be incompatibilities. My TV isn't compatible.

Did you see Asus has a Miracast dongle for sale?

http://www.amazon.com/Asus-Miracast-Wireless-Display-90XB01F0-BEX000/dp/B00IBD0Q16

http://www.asus.com/Tablet_Mobile_Accessories/ASUS_Miracast_Dongle/

You might try again with another TV, perhaps a Brick and Mortar showroom where you can try a few different TV's.

What instructions or documentation are you following to connect / test?

http://blogs.windows.com/windows/b/windowsexperience/archive/2013/11/12/windows-8-1-on-your-big-screen-with-miracast.aspx

Does the TV/remote device show anything going on? Is the G750 seen from that end trying to connect?

buggyro
07-12-2014, 09:37 AM
The blue screen appeared at shutdown with a message regarding "power state" after installing the nvidia beta driver. That was all i could read before the auto restart.

I followed a lot of FAQ's including the one you suggested.

I don't think the problem is with the TV or PTV3000 as both work with other Miracast and WiDi devices. In fact the G750 is the only device that doesn't work. Thy both have latest firmwares installed. I think the problem is a driver (wireless adapter or graphics card) or win 8.1 itself.

Both the TV and the device show Connecting to laptop, but after about 20 sec they say Connection Unsuccessful. This behavior happens with any combination of drivers. I've also tried to disable firewall, antivirus, without success.

Does anybody know what Broadcom AC WiFi card the G750JM has? I've been trying to find other drivers for this card without any success.

I was also wondering does Miracast work for others with 2014 G750's?

hmscott
07-12-2014, 10:56 AM
The blue screen appeared at shutdown with a message regarding "power state" after installing the nvidia beta driver. That was all i could read before the auto restart.

I followed a lot of FAQ's including the one you suggested.

I don't think the problem is with the TV or PTV3000 as both work with other Miracast and WiDi devices. In fact the G750 is the only device that doesn't work. Thy both have latest firmwares installed. I think the problem is a driver (wireless adapter or graphics card) or win 8.1 itself.

Both the TV and the device show Connecting to laptop, but after about 20 sec they say Connection Unsuccessful. This behavior happens with any combination of drivers. I've also tried to disable firewall, antivirus, without success.

Does anybody know what Broadcom AC WiFi card the G750JM has? I've been trying to find other drivers for this card without any success.

I was also wondering does Miracast work for others with 2014 G750's?

buggyro, are you connected to the internet through the G750 Wifi? How about the TV?

WiDi and WiFi Simultaneously
https://communities.intel.com/thread/38534

"My problem is that when I have connected to my TV using WiDi it stops my WiFi connection making it impossible to stream from the Internet or Media Server. "

Perhaps turn off the internet router, disabling that wifi connection, and then try to connect the G750 / TV / device with Miracast.

If that works, try using Ethernet for the Internet connection, or if you need to use Wifi internet, use this example from the thread link above to get both wireless connections working properly.

Problem:

It seem Windows try to access Internet via TV WiDi Wireless connection and ignores the wireless router.

Solution:

You need to configure automatic metric System.

1. In Network and sharing page - Click on Change Adapter Setting (Right Top)

2. Right Click on wireless Network Connection 2 (Your Original Wireless Router) -> Properties

3. Click Internet Protocol (TCP/IP)

4. Select Properties

5. In General tab -> Advanced

6. Uncheck Automatic Metric and Give a Low number (say 5) and Click OK

7. Now Click on wireless Network Connection 3 (Widi Wireless) -> Properties

8. Click Internet Protocol (TCP/IP)

9. Select Properties

10. In General tab -> Advanced

11. Uncheck Automatic Metric and Give a High number (say 50)

Let us know if you get it working, and how you did it :)


I haven't seen any reports of the G750 supporting Miracast, and the G750xx specifications only mention WiDi "Integrated 802.11ac or 802.11 a/b/g/n (WiDi)" under Specifications => Networking :
http://www.asus.com/us/Notebooks_Ultrabooks/ASUS_ROG_G750JM/specifications/
http://www.asus.com/us/Notebooks_Ultrabooks/ASUS_ROG_G750JS/specifications/
http://www.asus.com/us/Notebooks_Ultrabooks/ASUS_ROG_G750JZ/specifications/

And, Widi stuff doesn't mention Miracast...
http://www.intel.com/content/www/us/en/architecture-and-technology/intel-wireless-display.html

It looks like there are some compliant devices for both Widi and Miracast, but they explicitly mention it, and the G750 specs don't mention Miracast, only Widi

Maybe that is why Asus came out with the Micracast Dongle?
http://www.asus.com/Tablet_Mobile_Accessories/ASUS_Miracast_Dongle/

Wireless Display Standards Explained: AirPlay, Miracast, WiDi, Chromecast, and DLNA
http://www.howtogeek.com/177145/wireless-display-standards-explained-airplay-miracast-widi-chromecast-and-dlna/

"Intel Wireless Display 3.5 makes WiDi Miracast-compatible, essentially turning WiDi into another branded Miracast-compatible standard. Intel has basically folded WiDi into Miracast."

buggyro
07-13-2014, 04:39 PM
In Win 8.1 Intel's WiDi does not work anymore, because Miracast is built-in in Windows. Intel has disabled WIDI in win 8.1.
Requirements for Miracast in Win 8.1 are:
- wireless adapter with NDIS 6.3 driver (virtual WIFI and WIFI Direct needed). You can see that by running Get-NetAdapter | Select Name, NdisVersion in powershell. Broadcom AC is NDIS 6.40
- graphics adapter wth WDDM 1.3 driver (win 8.1 only driver). Both Nvidia and Intel have WDDM 1.3 drivers, but i think Nvidia doesn't have yet full suport for Miracast.

The "add a wireless display" options in the Project Charm should appear only when all the above conditions are met. On a older laptop with older NDIS version of the wifi card the option never shows up.

I think the only solution for now is to wait.

I am tempted to try to install win 7 on the system only to check if widi works :)

PS: The dongle you mention is for the TV, in case your TV does not know Miracast or WIDI. Mine knows both, and i tested it with both with other devices and works well. The other device i have Netgear PTV3000 i use on a TV which does not have WIDI or Miracast and again works well with other devices.

hmscott
07-13-2014, 05:04 PM
In Win 8.1 Intel's WiDi does not work anymore, because Miracast is built-in in Windows. Intel has disabled WIDI in win 8.1.
Requirements for Miracast in Win 8.1 are:
- wireless adapter with NDIS 6.3 driver (virtual WIFI and WIFI Direct needed). You can see that by running Get-NetAdapter | Select Name, NdisVersion in powershell. Broadcom AC is NDIS 6.40
- graphics adapter wth WDDM 1.3 driver (win 8.1 only driver). Both Nvidia and Intel have WDDM 1.3 drivers, but i think Nvidia doesn't have yet full suport for Miracast.

The "add a wireless display" options in the Project Charm should appear only when all the above conditions are met. On a older laptop with older NDIS version of the wifi card the option never shows up.

I think the only solution for now is to wait.

I am tempted to try to install win 7 on the system only to check if widi works :)

PS: The dongle you mention is for the TV, in case your TV does not know Miracast or WIDI. Mine knows both, and i tested it with both with other devices and works well. The other device i have Netgear PTV3000 i use on a TV which does not have WIDI or Miracast and again works well with other devices.

buggyro, thanks for the clear description of the state of the problem... but it isn't clear why when all is in compliance that it still isn't working/connecting.

Did you try disabling Wifi Internet and only use Wifi for the Widi/Miracast?

Good news on the dongle, for me anyway, I can enable my TCL 50" TV :)

The problem with Windows 7 might be finding a working Windows 7 driver for that wifi card in the G750... there are no Windows 7 drivers supporting G750's from Asus - maybe someone that has found a Windows 7 driver for that Broadcom card will respond here with a link.

You might document this in a Technical Inquiry for Asus to respond to, and ask if / when Widi/MIcracast will work on G750 Windows 8.1.

https://vip.asus.com

And, it looks like responding into the forums.geforce.com site is another place to look for support:

Missing wireless display option in Windows 8.1 / Missing WDDM 1.3 features
https://forums.geforce.com/default/topic/742013/geforce-drivers/missing-wireless-display-option-in-windows-8-1-missing-wddm-1-3-features/

site:forums.geforce.com 2014 nvidia windows 8.1 widi
https://www.google.com/search?num=50&safe=off&client=firefox-a&hs=4ej&rls=org.mozilla%3Aen-US%3Aofficial&channel=sb&q=site%3Aforums.geforce.com+2014+nvidia+windows+8. 1+widi

This guy got MIracast working on Intel/AMD, but not Nvidia on 340.43 Beta:
https://forums.geforce.com/default/topic/753944/geforce-drivers/official-nvidia-340-43-beta-game-ready-display-driver-feedback-thread-6-17-14-/post/4244460/#4244460

Maybe if you switch to using the Intel GPU?

buggyro
07-13-2014, 06:33 PM
What I tried and did not work:
- disable the 860m in device manager, same behavior,
- set in nvidia 3d settings to use integrated graphics, same behavior
- disable intel integrated graphics, the "add a wireless display" option dissapears
- tried connecting, while wifi was disconnected, or connected to 5ghz, or connected to 2.4 ghz, same behavior.
- also tried beta nvidia drivers drivers, same behavior (in release notes says it enables miracast on x86, maybe that means that on x64 platforms is not working yet).
- disabling antivirus and firewall, same behavior
I guess i will wait for new nvidia drivers and then try again.

I have an older Acer laptop with 640m, intel i5 3rd gen, intel 7260ac wifi card, win 7 x64 installed. Although it was a pain in the a** to setup, in the end widi works on that laptop (i had to try a lot of combinations of drivers and software before it worked).

Scott thanks a lot for trying to help me.

hmscott
07-13-2014, 07:13 PM
buggyro, found this monster thread on the Intel support forum, and this particular post that says he finally got an MSI GT70 to connect to a PVT-2000 using Windows 8.1, and he has detailed instructions / steps :)

Post #151 of 229 posts!
Widi & Windows 8.1 problems
https://communities.intel.com/message/218381#218381

Looks like an ongoing problem... with Intel support directly posting support into this thread - you could try posting there for help.

Intel WiDi in Support Community forums:
https://communities.intel.com/community/tech/intel_widi

Hugodoys
01-07-2015, 03:47 AM
I'll leave this page that helped me a lot this the WiDi problem. Very easy.
http://digitalmediaphile.com/index.php/2013/07/15/how-to-use-non-certified-play-to-devices-in-windows-8-1/

Dugi203
03-15-2015, 02:48 PM
Same problem here... Tried reimstalling WiFi and video drivers, no dice. Hower during the conection atempt if the devices window is open you can see
that the connection fails during the time when audio is loaded. Any ideas?

buggyro
04-07-2015, 06:28 PM
After a few months of windows updates, miracast suddenly works, so i guess the problem was with windows.
It is clear however that if you want it to work, you should have a clean network stack, meaning no VPN virtual adapters or VirtualBox network adapters.
It's quite clear that the technology is still in infancy at least software wise (or at least Microsoft wise :-) , seeing as android has no problem with it).

z3540
07-21-2015, 03:40 PM
buggyro, I have the G750JW with Broadcom AC wireless card and Nvidia Geforce GTX 765M and the latest drivers. I have Windows 8.1 64bit with all the updates. I still don't see "add a wireless device" when I go to Charms>Devices>Project when trying to connect my 4K Sony TV (1 year old) that has the Microsoft Wireless Display Adapter. I know the TV/Display Adapter setup works because I can see the "add wireless device" and can project my Microsoft Surface Pro onto the TV. The latest Nvidia driver has WDDM 1.3. Not sure if the Broadcom AC wireless has NDIS 6.40. If we have the same wifi cards, I assume I have NDIS 6.40 with the latest driver (6.30.223.255 from Asus website). Could it be that I have to use the Intel Graphics. I'm not sure how to do that or if I CAN even do that with the G750JW. The only difference I see with your setup is your laptop and PVT-2000. I'm using the JW laptop and Microsoft Wireless Display Adapter.

Can you please list the steps you did to get your laptop to project to your TV?

hmcott, do you have any suggestions?

Thanks for any help you can provide.