Here goes nothing. Sorry in advance for the long post.
I currently have a HTPC connected via HDMI but i'm only getting 2 channel PCM to my receiver. It appears that windows fully believes that I have at least 5.1 but its not getting to the receiver that way. Here is my setup thus far.
AMD 5200 64x dual core chip
MSI 7390 mobo (has on board realtek 5.1 sound)
2 GB of RAM
Saphire ATI Radeon 5450
Trying to mainly use WMC as my main content player (I have a wife that doesnt care for technology and thus it needs to be as easy as netflix to use)
I've downloaded and installed all types of codec packages, media players, drivers, EDID information, etc. All Video formats are working fine .. everything plays (all types of files) as it should. I just cant get 5.1 to my receiver.
Samsung 50 inch Plasma (HP-S5053)
Yamaha 5.1 (HTR 6130) capable of formats i'm trying to send to it.
I have the HTPC, my comcast cable box, PS3, and an XBOX 360 all connected to an HDMI 4 port switcher that i got from monoprice. The switcher connects to my DVD in slot in the receiver. The receiver then feeds the TV.
The switcher has a dual purpose. First it allows everything to be connected at once with minimal effort, but it also allows me to pass 5.1 from all the devices to the receiver. This particular receiver has HDMI pass-through which i'm sure many of you are familiar with. By using this switcher i'm able to have all the devices feed all the audio via HDMI to the switcher and then i have a digi coax going from the switcher to the receiver allowing it to process the extra audio information and pass it to the speakers.
As a caveat here. All of my other devices have NO issues passing full 5.1 through the switcher to the receiver. All three have been hooked up for months this way and all three (xbox, cable, ps3) have been tested with 5.1 content and they sound great.
I've read all types of posts and followed all types of instructions and i've completely wiped all traces of audio and video drivers and software multiple times.
I've explored the EDID thing, but i've read that 1) Yamaha receivers dont really have that issue and 2) if i have all the supported formats under the supported formats tab in audio properties then its NOT an EDID issue. (pic attached)
notice this is with the Realtek ATI drivers installed. I'm pretty sure i get the same information if i just have the AMD ATI drivers installed ... cant remember completely ... i'd have to double check that.
Ive followed guides that had me download the shark007 codecs, just ffshadow (or whatever) codecs along with media player classic cinema edition .. all kinds of stuff.
I need some help here. I'm sure i've left out information that is needed so please let me know if there is anything else i can provide (screenshots, programs/codecs installed, etc)
Thanks in advance
more information to hopefully help someone understand whats going on ..