Originally Posted by crayneogeo
I have been pulling my hair out trying to diagnose my sound issue with the MYST card. I finally made a video and posted it to the powercolor tech people, but thought maybe someone here could see if they have the same issue.
No matter what I do, I cannot get two sound sources to show up in my sound panel. With my old card, I would have multiple entries, and I could just choose the one I wanted. With the ati card, it will only show one at a time, no matter what I do.
I have done already:
multiple drivers (both realtek and CCC)
multiple PC's (both win 7 and win 8).
multiple cards (I bought two for xfire, both act the same way).
The reason I need this is I normally have my PC hooked up to my main monitor and my receiver, and depending on what I am doing, I switch the sound (ie. watching a movie, I would switch to the tv).
I just want to find out if this is normal for ATI cards? my Nvidia card has no problem with this. Please excuse the crappy video and my cat, she is almost 18 years old and has dimensia!
Well, I finally got a useful response over at the AVS forums. It turns out the issue is the cards support only ONE hdmi audio source, and if you want to use the displayport to output audio to an HDMI device you must use and ACTIVE adapter. Similar to how you cannot get more than two monitors to run off one of these ATI cards without active displayport adapters since they evidently only support two HDMI video sources.
I hope this post helps someone in the future!
Original response below:
AMD card supports up to six audio streams. The supported configurations are
(The point is that HDMI is allowed only once.) If you want to use two HDMI devices for audio, you have to use an active DP to HDMI adapter. (A passive adapter won't work as it simply transmits HDMI signals over a DP connector.)