Strange issue after ATV4K is sleeping for a while


i’ve been having issue lately frustrating.

if appletv 4k has been sleeping while, let’s overnight, , wake sony tv turn on hdmi-cec signal says “no signal”. way can work unplug hdmi cable atv4k , plug in. has had same issue?
 

i don't have same issue, have noticed after coming out of sleep, gets stuck in 720p hd mode, , have unplug cable , plug in 4k again. vizio p50-c1 , new belkin ultra high speed hdmi cable apple recommends. going try different cable see if still have same issues.
 


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