Apple TV HEC Issue after update

Verify the CEC settings on all your HDMI devices. In particular the one that just got updated. Just in case it got reset somehow.

For Apple TV: Settings﹥Remotes and Devices﹥Control TVs and Receivers﹥On

For TV and optional other devices: See their manuals. They may have a brand-specific ‘trade name’ for CEC.

(CEC seems to work fine on my Apple TV box with tvOS 17.)

It isn’t Apple breaking that ability, the functionality of HDMI CEC is dependent on the TV and each manufacturer supplies their own implementation. So when that functionality breaks it will be dependent on them to fix it.

This exact issue occurred a few years ago and it was quickly apparent that it was for users with LG TVs. Once enough users went to them with the issue and they investigated LG acknowledged it and sent out a patch, after which it was reported to be fixed.

In the event it was ever caused by an update from Apple then it would be replicated by the regular users in this forum and threads like this would be full of reports within a few hours.

I am not trying to argue with you, just pointing out the facts. It can be easy to just say it happened after an update and immediately go for Apple but when you step back and realize that may not be the case it will help to go in another direction that will help solve the issue. However, if you don’t want to do that it’s your choice.

Have a nice day.

Same issue for me.

After updating Apple TV to tvOS 17.4, CEC control via HDMI ia broken.

Remote now only controls tv volume on my Panasonic OLED

Extremely disappointed and wonder how such an issue went undetected with Apple's strict software code quality assurance protocols.

CEC is dependent on the TV, and each manufacturer has its own implementation. If it persists reach out to the TV manufacturer.

You cannot show that Apple did not break it either! If I could uninstall TvOS 17 then I could determine if Apple broke it. The Samsung I have is a 2017 model and I just today updated its firmware but still fails.

My issue is similar, but the CEC seems to work fine. Just the Apple TV won’t which on via the remote if it’s been left off for a period of over roughly one hour. In order to turn it back on I need to switch off/on at the plug. I am having to do this every morning and every time I return from work since the recent tvOS 17 update 🤷🏻‍♂️

Hopefully Apple will fix asap.

Restore did not fix my hdmi Cec/arc ceasing to work. Samsung smart tv older model.

So since appletv is dependent on your TV for the display of your picture and apple breaks your tv’s ability to perform that we should contact our tv’s mfgr?