Originally Posted by Allcroc
Each company has a different name for hdmi cec. Sony calls it bravia sync and lg calls it simplink. Cec works best with all components from the same manufacturer, but you can get some functionality with different manufacturers. I was able to control the power and volume of my Sony receiver via hdmi with my lg tv. On the lg tv, there is a simplink button on the remote where it can be enabled or disabled. On the amp menu of the receiver there is an hdmi option. It can be either set to amp or amp+tv. Amp disables cec and amp+tv enables cec. With cec enabled, my hdmi device (htpc) would only output PCM stereo and compressed formats was empty. After disabling cec on both components and restarting htpc, stereo-7.1 was available along with Dolby and dts under compressed formats. It really didn't matter though. I ran an optical cable from tv output to receiver for web content. On my old tv, this could only output stereo. However, contrary to what you may read, there are newer tv's that WILL pass Dolby 5.1 from hdmi and output it through toslink. I can just leave the receiver set to tv/optical and I get the same sound. Hope that helps.
Thanks for the explanation. Unfortunately for my problem as I address here
I have not seen this on my Denon 3310 CI or on my 2005 Aquas 720p LCD.
My problem seems to come from windows sound not holding settings for enable exclusive mode in the Properties/Advanced of my default sound device. PCM 2.0 channel gets sent to my AVR both HDMI and Digital optical. WMP plays the identical .wtv files correctly.
My next step is to update my RealTek HD driver to 2.57 (01-28-2011) and see if that fixes my broken WMC sound issue.