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Hi,

I buyed a new sound card - the Xonar HDAV 1.3 Deluxe - and after installing, DX11 and DX10 stopped working. At least I think it was after that. I'm not sure, but it's the only thing I changed recently.

No game or benchmark started in DX10/DX11 mode. Only DX9 worked. I reinstalled my nVidia drivers with "clear install" and used Driver Killer. The result is, that DX10 works now. DX11 still don't.

Even when starting Heaven Benchmark in DX11 mode, the Tessellation option is greyed out.

I since tried to reinstall the nVidia drivers again (multiple versions), the Xonar drivers, Heaven Benchmark and a DX11 update. Nothing works.

I don't know what to do anymore.
Please help!
Anything else seems fine. Performance is as always and I don't get any weird errors.

What Windows version are you using, and have you try shutting down or restart the pc?

Well, that's a great example of two hardware drivers fighting one another. The problem is that Xonar does not only process sound but the HDMI wich Nvidia driver does too.

I'm afraid this issue is complex. Myself have a S-Fi Titanium which was a pain to put to work under seven and could be done only using Daniel K's hacked driver since the Creative driver could not even find it's own card... Recall to have heard Xonar has some major issues too.

As a first attempt to correct things you can try:

1: http://www.guru3d.com/category/driversweeper/ - get this application and afterwards
a) Uninstall drivers,
b) Reboot, run Driver Sweeper,
c) Install new drivers, reboot.

Install the Xonar drivers first. It's a try and error first attempt, meanwhile I'll search the web and hope something shed some light which can lead to a more positive approach to this problem.

PS: Man, the monster is ugly when it comes to actually using that HDMI, I want nothing with it for a while, let's hope to try to solve the DX11 issue first and foremost, waiting for your return, hopefully with good news.

Oh boy.

First a Thank you to tuanming and nosisab Ken Keleh.

Now to what I did:

Quote:1: http://www.guru3d.com/category/driversweeper/ - get this application and afterwards
a) Uninstall drivers,
b) Reboot, run Driver Sweeper,
c) Install new drivers, reboot.

I tried this method........without luck. BUT!

I tried other things as well. I deleted again everything nVidia related, got from a friend a GTX570 and changed it with my GTX480. Simply to have a different DX11 card in my PC. Same problem. Even without the Xonar, DX11 was a no-go.

Sooooo, I put the GTX480 back in (after killing off the nVidia drivers once again) and this time, I let Win7 connect to the internet, to get the drivers for the GTX. Not with Windows Update, but directly through the Device Manager. Win7 did not install the nVidia drivers, but the WDM ones. Didn't even know they existed. So I had no Control Panel, BUT DX11 WORKED.

Then I installed the Xonar again, restarted like 20 times to make sure and only then I installed the nVidia drivers over the WDM ones and DX11 still works.

So problem solved.......for now.

Quote:PS: Man, the monster is ugly when it comes to actually using that HDMI, I want nothing with it for a while, let's hope to try to solve the DX11 issue first and foremost, waiting for your return, hopefully with good news.

HDMI and PC are two things, that shouldn't be together. Why can't the Xonar put audio through HDMI alone? Why does it have to be with the video signal from the video card?

And why has my AVR a problem with HDMI coming from a PC? Signal there, signal lost. Signal there, signal lost and so on. Rarely the image remains, except when I go to the AVR menu screen, where the image remains the whole time.
But wait! If I do that, I see the AVR's menu screen on my TV, not the PC one!
Thank god for clone/dual view. Since I only need sound from my AVR and want to go to the TV directly, this is my solution.

Btw, my AVR is a Yamaha RX-V1065. Don't know, if it has a different name in the US.