So I got my Onkyo 806 in yesterday and finally got around to setting it up today. Uverse works fine, PS3 works fine, the only thing I am having a problem with is my HTPC. Currently I am just using the Onkyo to pass everything through and use the television speakers, should be getting speakers in a couple of weeks.
I get video to pass through just fine, but no audio. My current HTPC specs are: Gigabyte 780g, 4850e, 2gb of memory, Vista Ultimate 32bit. Both the Uverse box and PS3 pass audio just fine, but not the HTPC, I have tried a few different HDMI ins on the receiver and nothing.