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Apple TV 4K Shutting Off Whenever TV is Turned Off

A

Amazon Rainforest

macrumors member
Original poster
Jul 6, 2022
34
40
Hello. This is a problem that has just shown itself within the last few months. My Apple TV 4K feeds my Samsung TV via an HDMI cable. For years, I have always left my Apple TV powered on (I like to leave the Infuse app open and ready to go). This makes things easy to resume a film or show where it was last paused. So, all I used to do is turn off the TV and the Apple TV box was good. Also, the Apple TV maintains its connection to my NAS media server as long as it is powered on.

What I have been seeing, beginning a few months ago, is that whenever I power off the TV, 3-4 seconds later, the Apple TV turns itself off too. I have to manually turn it back on. I am at a loss: is the problem with the TV or the Apple TV? Is it possible that the Samsung is sending a command down the HDMI cable informing the Apple TV that it is powering down? Or is the Apple TV detecting on its own that the Samsung TV has gone away and thus turns itself off?

Any ideas?
 
Audit13 said:
I use an AppleTV as a 24/7 Tailscale exit node and had to set the AppleTV as a Home Hub keep it running 24/7.

Perhaps enabling the AppleTV as a Home Hub would resolve the issue.
Click to expand...
I already use my Apple TV as my Home hub. That's why this problem is so strange. Nothing that I know of has changed in my setup. Yet, the behavior is different.
 
It's most likely your TV...I have a Sony, and there's a setting that allows it to control the devices connected by HDMI...I had the same problem after a software update on the TV.
 
Amazon Rainforest said:
I already use my Apple TV as my Home hub. That's why this problem is so strange. Nothing that I know of has changed in my setup. Yet, the behavior is different.
Click to expand...
Very odd. I have two AppleTV 4k (1st and 2nd gen) set as Tailscale exit nodes and both are always online when I check the Tailscale dashboard even though the TVs and receivers are turned off and the front LED is off.
 
Amazon Rainforest said:
Hello. This is a problem that has just shown itself within the last few months. My Apple TV 4K feeds my Samsung TV via an HDMI cable. For years, I have always left my Apple TV powered on (I like to leave the Infuse app open and ready to go). This makes things easy to resume a film or show where it was last paused. So, all I used to do is turn off the TV and the Apple TV box was good. Also, the Apple TV maintains its connection to my NAS media server as long as it is powered on.

What I have been seeing, beginning a few months ago, is that whenever I power off the TV, 3-4 seconds later, the Apple TV turns itself off too. I have to manually turn it back on. I am at a loss: is the problem with the TV or the Apple TV? Is it possible that the Samsung is sending a command down the HDMI cable informing the Apple TV that it is powering down? Or is the Apple TV detecting on its own that the Samsung TV has gone away and thus turns itself off?

Any ideas?
Click to expand...

I too have seen this fairly recently when I never had before on my LG C1. It must have started after some TVOS update. I also have CEC 'off ' and Home Hub 'on' in ATV my settings. I finally decide to try turning off CEC on the LG tv and that fixed it.

Edit: I have the latest ATV4K model.
 
AFAIK, appleTV never turns completely off, only goes to sleep in low-power mode.
It is exactly to be able to fulfill duties like Home Hub and sleep proxy for example.
 
I have some additional information. My Apple TV has CEC disabled but my TV has it enabled. According to what I have read, both ends need to be enabled in order for this process to work. I am going to file a report with Apple because I believe the problem is with the Apple tvOS. I disabled the CEC in the TV and the problem went away. But this created a new problem. My soundbar communicates directly to my TV over HDMI (using the ARC port). This no longer works unless the TV has CEC enabled. So, no choice there. I will have to live with this until (if ever) Apple fixes this.
 
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