[mythtv-users] Possible to do HDMI audio with BFG GT 220 Rev B?

[Justin The Cynical]

Christopher Kerr wrote:
> On Mon, Mar 29, 2010 at 4:43 PM, Justin The Cynical
> <cynical at penguinness.org> wrote:
>> Ozzy Lash wrote:
>>> So now I wonder if the
>>> HDMI can carry sound since it is plugged into the DVI port through an
>>> adapter.
>>> It isn't a big deal, I can use the SPDIF out of the motherboard, just
>>> curious more than anything.
>> Nope.  DVI doesn't have the lines for audio, which electrically, is the
>> only real difference between HDMI and DVI.
> 
> Why is this myth so common? For an HDMI connection, the audio signal
> is multiplexed with the video - there are no "lines for audio" in
> either connector.
> 
> (this is the reason that boxes which accept digital audio + DVI and
> output HDMI are expensive, rather than being simple passive devices)

*blinks and googles*

Well well, you are correct sir, I stand corrected.

"DVI is mostly compatible with HDMI. The main difference is that DVI
typically carries no audio data in its TMDS channel, although
increasingly, modern PC video hardware is providing audio (e.g. cards by
NVIDIA and ATI), allowing the PC to send audiovisual data to a high
definition television with an HDMI input. If a PC's DVI output does not
provide audio, it can be patched in as part of the DVI to HDMI adapter."

"...This means that a DVI-D source can drive an HDMI monitor, or vice
versa, by means of a suitable adapter or cable. However, the audio and
remote-control features of HDMI will not be available unless the output
supports HDMI via a DVI plug (e.g., ATI 3000-series and NVIDIA GTX
200-series video cards)."

So for the OP, it appears that it is possible, assuming the card
supports it.  For myself, I will do my best to stop spreading
misinformation.  Thank you for pointing out my misunderstanding.