I donated this board to a friend after he experienced problems achieving DTS Audio on his Sony AMP using a Western Digital Media Player Unfortunately the HDMI Audio would only ever show 2 Channel Stereo.
Through numerous reinstalls and late night fiddling I managed to assist him in finally getting all the AMP’s sound properties to become available and from some of the searches I did I noticed quite a lot of people are still struggling with this.
HDMI Audio only showed 2 Channel Stereo despite numerous ‘fiddles’ on his SONY Amplifier, this had worked perfectly on my Yamaha Amplifier.
My HDMI Audio Solutions Guide – This should work on other systems as well.
I believe the below steps should help just about anyone experiencing issues with the HDMI Audio on this board.
* This has been tested on Windows 7 and 8 x64. *
1. Ensure the amplifier Audio Settings are configured correctly:
It appears that when the Audio setup is configured for “AMP + TV” often only the stereo output from the Display are passed via the HDMI detection which results in the AMP’s capabilities not being detected. This should be set to just “AMP”
2. Ensure SPDIF Audio in the BIOS is set to SPDIF and not HDMI
This is audio redirection of the onboard REALTEK sound, this is not required for HDMI from the NVIDIA HDMI interface, Nvidia produces its own sound via HDMI passthrough, this effectively means that the amplifier becomes the sound card.
The below detail is specific to the NVIDIA GFORCE Range, however the ATI display cards also have a separate Audio Driver to be installed.
The below screenshot is from the NVIDIA PUREHD website GUIDE:( http://www.nvidia.com/content/purevideoHD/pdf/NVIDIA_GeForce_HTPC_Guide_2_8.pdf )
We did however manage this with only the GEFORCE Driver and the HDAUDIO driver from the NVIDIA Website.
NVIDIA HDAUDIO KB: http://nvidia.custhelp.com/app/answers/detail/a_id/2384 ( Driver links are on the page )
4. Audio Setup in Windows
By now everything should be ready to roll.
Note there will be 2 audio devices, one for the SPDIF interface and one for the HDMI Audio Output ( On my Yamaha Amplifier it showed the amplifier model as my Audio device – results may vary )
Selecting properties on the NVIDIA HDMI Interface should now yield the AMP’s capabilities:
There is some additional guidance from the NVIDIA PUREVIEW HD Guide with regards to 7.1 ( http://www.nvidia.com/content/purevideoHD/pdf/NVIDIA_GeForce_HTPC_Guide_2_8.pdf )
I believe this resolution would also be applicable to other HDMI Audio related issues on GFX Cards which support HDMI Audio.