Getting a 360 to output 5.1 over HDMI

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Viper87227

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Jun 2, 2004
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Someone tell me why I can't figure this out!

I'm redoing my entire home theater for the holiday. I previously had a launch 360 that was outputting component + optical to an older Sony receiver. I had no problems getting DD5.1 to work with this setup. Yesterday my new 360 arrived along with a new Sony STRDH720 receiver. I'm having nothing but headaches getting audio from the 360. Strangely enough, the first time I hooked it up, it showed DD5.1 just fine. Next time I booted up though, with nothing changed, it was outputting 2 channel PCM. I fought with it all night, and it stayed PCM all night. Today I decided to try to see if using optical for audio would fix it. I set things properly in my receiver for that HDMI input to accept audio over optical. Booted up, and huzzah, DD5.1. But then, for shits, I decided to see what would happen if I unplugged the optical (while everything was still on). Well, it still worked. It was still 5.1, only HDMI. I don't think it was ever using the optical. Rebooted the 360, right back to PCM. So again I hooked up the optical to see if that did anything. This time, no change, still PCM. So I shut it all back off and unhooked the optical, because I really don't want the extra wire, especially if it's not doing anything. Powered it all back on, and this time it's outputting sound to my TV, not my receiver. I made sure my receiver was no longer set to accept optical audio for that HDMI. I also turned off audio passthrough to the TV. As expected, that fixed my problem of the TV playing audio... but now I've got no sound at all.

I've been googleing frantically reading everything I can find.... but no solid solution. The fact that the audio being output by the xbox keeps changing is really getting irritating though. Everything else hooked up to the receiver is outputting audio just as it should, I've got no problems getting DTS-HD and TrueHD from my blu-ray player... so I really don't think it's a setting in my receiver that needs to be adjusted.

So... is there some trick to forcing the 360 to only output DD5.1? Has anyone else had trouble getting the new 360's to output sound properly?
 
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