I have Xfinity internet, phone, TV. I have a new Sony Bravia HDTV. It constantly freezes (15 - 20 times a day) and the screen goes blank(not always). I unplug the TV box. It does not help. I call Xfinity and have them reboot from their end. It only helps a short time. I had a technician at the house and he could find nothing wrong. He did inform me of the handshake problem between Sony Bravia software and Xfinity X1 software. I tested this several times by having a Samsung TV and The Sony Bravia in different rooms. I was in one room; my husband in the other. The Sony TV froze 4 times in a period of 20 minutes. The Samsung did not freeze at all. Also, when I watch Netflix via my smart TV not Xfinity service, it does not freeze.
I am sick of this constant problem. Each company blames the other. I am about ready to buy a Samsung TV but the Sony Bravia is new and we paid a lot for it. Xfinity has clout and should work with Sony to FIX THIS PROBLEM.