I have a Windows Vista and Windows 7 system, each with an ATI CableCard tuner. Using the CableCard tuner, I can receive all of the HD channels in my subscription except for two, Fox Business HD & Hallmark HD (the SD version comes in fine). When I tune to the channel, I either get a black screen or the signal comes in for a second, then I get a "Subscription Required" error message. However, the channels load fine using my cablebox.
The first theory on the table was that the channels are using SDV and that I need the tuning adapter. I had a senior level cable technician visit and confirm those channels are NOT on SDV.
His theory is that the encryption used on those channels does not agree with Windows Media Center. Also, those channels share the same frequency. He said the issue COULD be with the ATI tuner because he has a CableCard Tivo in his test lab and those channels come in fine. Since Cablevision does not officially support Media Center, there is not much they can do. Perhaps when the Ceton quad tuner or the HDHR tuner comes out, I'll receive different results.
Does anyone have any thoughts or theories as to why this issue is happening?