I am in IL using Comcast. The Moto 3421 connects to Yamaha receiver via optical digital cable and the video is connected to the same receiver via component cables.
Now, when watching HDTV channels with digital surround sound, the digital surround indicators on my receiver do not always show. The sound which comes out of Moto box is simply stereo.
I finally narrowed it down to the fact that if I see this problem I need to pull the power cord on the Moto box to do cold re-start and then I get the full sourround sound for a day or two. Seems as the audio decoding HW is getting hanged up within Moto box and defaults to stereo.
Anyone else seeing this ? I am on my 2nd Moto box doing it. Obviously, Comcast support only knows how to swap boxes and check cables.