HDMI-CEC is not working with Apple TV 4K

So I was having this exact same problem and tried everything in this stream of responses.

The only thing that fixed this was unplugging both the TV and the AppleTV for at least 1 minute.

After 1 minute, plug the TV back in, then the AppleTV.

Now use the ATV remote to sleep ATV and the TV now turns off again and will turn on when waking the ATV.

Same here. So I decided not to be lazy and did some basic troubleshooting. Both of my Apple TVs perform on/off function on my Sony upstairs that has not been updated and both have the same issue downstairs with updated Sony TV. After going to Reddit with my issue, it appears that it’s an issue with that update and everyone seems to be experiencing it. So I guess we just wait for another update and refrain from updating any other TVs until it’s fixed.

Sorry. I meant to say the Sony Update is the problem. I’m using Siri Remote as well on tvOS 14.3. Everything works on one Sony TV (with older firmware) but doesn’t with the other Sony TV (which had the newest firmware update)

Thanks for confirming. I had a feeling that the latest Bravia update was to blame. But, that didn't stop me from doing factory reset on my Bravia. Now I have to spend more time trying to remember all my apps and settings on my TV. Oh well. At least I'll have something to do until midnight, since going out for New Year's Eve isn't going to happen. Hopefully, Sony will get the fix out soon.

I have had this issue ongoing once in a while, different versions of software from ATV4K or TV.

This is how i solved it.

When HDMI-CEC isn’t working properly, you need to turn everything off at the plug and remove all HDMI cables from your TV. (Or if you are connected AV amp from there, my case i only have one HDMI cable that comes from TV to AV amp and every other device is connected to AV amp via HDMI cables)

Next, turn your TV on first. Then, one by one you need to connect your devices back in this order.

So if you have any external sound devices (soundbar or AV amp), you need to plug these into an HDMI port on your TV first, and then power them on. Next, plug in a set-top box, such as Sky Q, via HDMI and power it on. Finally, follow up with media players and Blu-ray players.

after this you should be able to choose on/off option again from your ”Control TVs and Receivers”

Reconnecting HDMI cables after each update works but it feels like debugging a Windows XP 20 years ago, not proper for an Apple product....

With other devices there is no problem, only Apple TV (4K, updated).

I have this problem too. I have an Apple TV 4K running tvOS 14.4. I have a Sony X900E running latest software and Disabling CEC and re-enabling on the TV does not fix this problem, nor does toggling CEC on the ATV. I have power cycled, connected HDMI cables in order, and I still have this problem.

The ATV will wake up the TV, but when I go to sleep the ATV the TV flickers to black then shows "No Signal". Not sure where to go from here. I don't have another TV to test this on.

Same issue here, I have the Apple TV 4K connected to a Yamaha RX-V 781 Receiver and an LG 4K TV.

Although it worked perfectly fine for a very long time now it doesn‘t any more.

I want to be able to again control the receivers volume again with the ATVs touch remote (via CEC and not via IR as a lame fallback solution).

I cannot even turn on the „Control TVs and Receivers“ setting, it‘s greyed out.

Tried all suggestions given here without any success so far... I really hope Apple fixes this issue soon with new tvOS version.

Just curious, does anyone here also use an RX-V 781 in connection with ATV4K? If yes, is it working for you? Curious as the Yamaha Receiver also recently got a firmware update.

I have 2 Yamaha receivers (RX-V6A & RX-V485). Each one has an AT4K hooked to it. CEC on the AT hooked to the V485 works fine. The one on the V6A does not. Bypassed the V6A and went directly to my LG OLED TV, problem followed the AT. Both my ATs are running version 14.4. AT can turn on off the TV, but it takes 30 seconds or more to turn it on.

I have similar issue - my Apple TV 4K was working perfectly with Samsung TV (I have 2 AT 4K and 2 Samsung TVs) however when I added hdmi matrix with an external source AT was powering an amp and TV in different room when disconnected I can not operate AT from Samsung remote

Just bought a new ATV 4K with the new Siri remote. It does not switch on or off an LG OLED tv, only the sound bar. Tried toggling the CEC setting on the TV it didn’t help.

Restarted ATV - that triggered something and I was able to switch off tv, but then it would not come on again and it wouldn’t switch off again on the next try.

(Btw, Amazon Fire 4K stick turns on/off the tv just fine)

Separately I fail to understand why the the turn-off button on the Siri remote needs to be held for a second to turn everything off? It’s not even protruding so it cannot be pressed by accident. Also every tv remote has an on/off button in the most prominent place and it works fine.

Why does an ATV user has to keep it pressed for it to work?

Apple team, if you are listening to this discussion..

I have a similar issue. until few days back, i had my fireTV connected to my denon AVR which to the Sony TV. all CEC controls have been working as you would expect.

i plug in the new ATV, that i bought few days back, to the receiver, .... and voila you notice the CEC control is not behaving as expected. The TV and AVR would not shut down when ATV power button is pressed for few sec. Although i think switch on does work fine (but i am hesitant if this will continue to work). i checked softwares/firmwares across sony, ATV as well denon, and everything is latest. Btw, pls note the all the CEC controls for fireTV continues to work fine (I have both these inputs going to my AVR in two ports).

i hope a fix is on its way soon. Apple team hope you are listening.

I have had this same problem for weeks and tried several solutions to no avail until I found this. It worked. Enjoy.

https://www.trustedreviews.com/how-to/hdmi-arc-and-cec-not-working-try-these-fixes-4041394

Even I have the exact same problem with my Apple TV 4K 2021. I used Amazon Fire TV 4K before and that remote controlled everything from Volume to Turning TV off/on. My TV does not specially give an option to turn CEC on/off but Amazon Fire TV successfully performed all the jobs.

But my Apple TV cannot either control the volume or turn on/off the TV. I can see the white LED blinking which would mean that the device is receiving signal but it fails to register the input. In my settings, I have enabled the control of the Home Theatre and control for the remote via HDMI but nothing happens. Therefore, I am having to sit with 2 remotes all the time. Very bad experience.

Apple I know you are reading this, please fix this issue ASAP. I have been on call with 4-5 different customer service agents, been to the service centre and none of them have a clue of what is going on. They do not even know this issue exists. I do not think they even cared to read this thread where so many of us have reported the problem. Please release the patch at the earliest, this is not as advertised during the keynote as well as on your website.

Unfortunately this doesn’t fix to turn off my LG TV. (But it did turn on though, after all the restarting etc).

Amazon Fire just works - maybe Fire uses good old infrared and Apple relies on HDMI signal