Apple TV 4K no sound through AV receiver if TV is not turned on?
I recently bought an Apple TV 4K primarily to play Apple Music through my AV system. I find that it goes on standby, no sound or video, whenever the TV is turned off (even though the TV is doing nothing but showing screensaver). All audio and video is going through the AV receiver (Onkyo) via HDMI. Are there any settings on TV, receiver, .... that can fix this? Any HDMI hardware hacks? It's very wasteful energy-wise and tv-lifetime-wise to burn the TV all day showing a screensaver when music/audio is all I want. This happens with Apple Music playing natively on the Apple TV or airplay from my iPhone. I saw this problem reported a few years ago and guessing that it persists. thanks for your help!
Apple TV 4K, tvOS 15