HDMI-CEC is not working with Apple TV 4K

My issue is different, updated 4rth. gen device with TVIOS 14.02 and now some apps no longer viewable, displayng black screen or my HDMI CABLES do not support DHCP encryption. Disney +, Amazon Prime and Spectrum TV app. I'm constantly restarting device to clear the errors.

AT4K’s CEC has always been broken with my TV LG Oled C9. I turned off all CEC features on Apple TV. But still when I change input on my TV to my Receiver it triggers AT4K to power on and changes to its input on my receiver.

so annoying.

Apple TV goes to Denon AVR and to LG TV.

ios 14.02

I’ve got the same problem with a Panasonic Viera. ATV4k HDMI-CEC was working perfectly but has now stopped working. The Google Chromecast and Xbox I’ve got plugged into the same TV can activate the HDMI-CEC no problem.

This is an Apple problem to solve.

Hi, I’m having the same issue. Cec is able to turn on my amplifier but it sends some malformed command as it select non-existent input. I have to manually select correct input. Powering off works normally.

Apple people - this is fundamental functionality! Get the issue solved please!

tv4k connected to a Sony amplifier. For the last 2 years it was working perfectly, so please don’t tell me I have to change cable or amplifier.

UPDATE

It seams that initial command sent to the amp is correct, it turns on and set input correctly. But right after that it switched to some wrong state and video stays on but audio is muted.

UPDATE 2:

Disabling AirPlay fixed the issue for me.

I had the exact same problem with TvOS 14.2 however I have had this problem in the past and for me I solved it the same way I did last time. It seems to be some form of issue if the ATV gets automatically updated while the TV is in standby mode. The solution is to put the apple TV into standby mode then put the TV into standby and unplug the cable to the TV wait for 10 seconds put the cable back in then turn on the Apple TV then my Apple TV is able to control the TV both on and off again. Not sure how CEC works exactly maybe it sends its command capabilities or something on start up so when the TV is powered on the Apple TV gets information about the TV or something. So my suggestion try unplugging and plugging stuff in again until it works it did for me at least.

tvOS 14.2 still doesn't fix this problem.

I tried to disable/enable "Turn on with remote control" in the apple tv settings

This is work only for power off my TV but not for power On...

I would like to point out that this worked perfectly before version 14 !!

Same problem. Apple executive very comfortably established that all my TVs HDMIs are not working. There is absolutely no problem in the Apple TV or remote. I dont know what to do. Have to keep carrying two remotes now.

Just got a new AT 4K. Was working fine on a Sony TV when connected. After update the remote doesnt work in any TV. HDMI CEC is on. Firestick works fine. When called to customer care no help at all plus very comfortably declared that all devices including HDMIs are faulty but Apple TV is working fine. Do you think for a consumer who is paying 4 times the price for a streaming device, this is acceptable...

I am brand new to Apple TV and with an LG TV i noticed my LG remote controlled the Apple TV as fine as you can expect by having CEC enabled on the TV side. After the tvOS14 update it stopped working. I could get it back inconsistently with no real correlation to anything.

However Disabling Airplay worked IMMEDIATELY for me in solving this issue. My LG remote controls the Apple TV perfectly fine now and it makes absolutely no sense.

To be clear, when i first came upon the seemingly totally random and without logical justification suggestion to disable Airplay on here I at first took it as the all too common occurence of someone not really reading the thread but offering misguided advice anyways. However with no other solutions i tried it - and it worked.

Now im not saying disabling Airplay is the answer here, i dont think it really is because i immediately turned Airplay right back on again and my LG TV remote *continued* to work flawlessly with Airplay enabled. So its more like *toggling* Airplay got it to work.

But to me what this does do is it put it in stark relief that the Apple TV absolutely has some kind of bug with regards to this CEC issue and disabling Airplay triggers something that brings it to life. I hope they fix it soon because im concerned my LG TV remote is going to stop working again and being forced to again use the nightmare that is the Apple TV remote.

My experiencie is as follows:

I have a Loewe TV and HDMI-CEC has been working nice until TVIOS 14.2 update.

Now I can't turn my tv on when I turn Apple Tv on. The rest is still working fine.

So I tried to plug the Apple Tv in another tv (SONY) and everything is working fine.

So I guess it is a problem of some tv brands needing a new software update.

Curious to see if that holds true for you. As a lot of us can get it to work fine for a time with the TVs that don't work by restarting HDMI-CEC or toggling Airplay and entirely switching TVs would be a lot like making one of these changes. My LG TV remote went back to not working again even after working completely fine for hours.

I know HDMI-CEC is a bit of a mess but I definitely did not have this problem at all before the 14 update. Even if the issue partially lies with some of the TV manufacturers, to lose the ability to consistently and reliably control this device that used to work totally fine before an OS update is a huge blow.

Same observation on my side.

On my TV Sony if I do some manipulations (unplug hdmi re-plug....) I even did a factory restoration of my TV. it works again but only for a short time.

Whereas before tvOS 14 I had no problem at all.

My TV is a Sony Android TV (2015).

I was able to regain the regain CEC by unplugging all HDMI cables from TV, factory resetting the TV and reconnecting all of my devices.

I can do all HDMI CEC functions on my Apple TV EXCEPT controlling the tv volume.

So I’m kinda back to step 1.

I can control TV volume with a old Roku I have so this must be an AppleTV issue since the 14 update.

Now that the Roku has AirPlay 2 support I might as well go back to it and just ditch the Apple TV.

It really is a **** shame, other than the CEC issue, the AppleTv was mu favorite streaming box. I will admit, going back to the Roku remote kinda made me appreciate how much I missed having a good remote for navigation.

Do you use HDMI-CEC with other devices?

Seems like most people here are experiencing this CEC issue just with the Apple TV. Yes changing TV settings, resetting TV etc etc can temporarily fix CEC with Apple TV but what is being glossed over is that HDMI-CEC works fine with all other CEC compatible devices, the only exception is the Apple TV so that narrows things down quite a bit.

Exactly. I’ve seen this type of response before when my iPhone stopped working with my car bluetooth. The response from one of the Apple experts on here was ‘your firmware needs updating, not Apple’s fault’.

That doesn’t fly for me. It was working fine, then Apple clearly changed something and then it stopped working. How is that anyone but Apple’s fault?