@garyanderson99 wrote: I have the same problem. Started yesterday, I have the sony XBR900 which I got 4 years ago and upgraded to the X1 version 3 box a year ago. I guess the X1 did an upgrade which recently caused this. It is connected to the main X1 recording box with a monster ultra HDMI cable. Power saving is set to "off". Only fix is powering off X1 box and then waiting 4 minutes to watch TV. On the 3 other TV's in the house using remote boxes they all work fine even when the main box and Sony aren't communicating via hdmi.
Same thing started happening to me about a week or two ago. I have a Sony KDL800B that's ~ 4 years old. It definately appears to be an HDMI handshake issue that popped up with some sort of X1 software update. I noticed these issues when my software version started jumping to 87.1.3 up to 88.x ... my software version is now back to 87.1.3 again and still having the issue. I've had my X1V3 (Arris) box for a while and never had issues.
From troublshooting ... If I stay on my X1 HDMI input I have no issues. If I switch to another input and turn the TV off, when I turn it back on after a few minutes I get no signal on the X1 input. I need to cyle the X1 power to get a signal back. Switching inputs does nothing. BUT, if the power remains on for my TV, I can switch inputs and back to the X1 input later and it does not lose singal. It appears the HDMI handshake issue occurs when the TV is powered down when NOT on the X1 input. Atleast that's what I think is happeneing with my Sony TV.
As others report, this was not an issue until the past week or so, and I noticed the X1 box has been getting updates with the version # jumping around. This is something on Comcast's side and also appears it may now be affecting other some other brands as well (Vizio?)
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