LG OLED C7 and Apple TV 4k - HDMI CEC

Question

BigZ12 Author

Level 1

34 points

LG OLED C7 and Apple TV 4k - HDMI CEC

My setup:

Yamaha RX-V781 connected to HDMI 2 on LG OLED65C7.

Devices connected to Yamaha receiver:

HTPC (HDMI1), Apple TV 4k (HDMI2), PS4 Pro (HDMI3) and cable tv tuner (HDMI4).

Only device which supports HDMI-CEC is the Apple TV 4k. (if you press the input button on LG OLED remote, you see the Apple tv as a sub device to the HDMI2 input)

https://imgur.com/YKfuDUq

I have to enable Simplink on LG, and HDMI control on Yamaha to get ARC, because I want sound through ARC for smart-tv apps like Netflix, Prime video etc.

When enabling this, and I use for example Netflix, the Yamaha receiver automatically switch to the assigned input for ARC. (AV1 on receiver)

My problem is that when leaving the smart-tv app/platform and back to HDMI2 (where I have 4 devices connected), it ALWAYS switches to the input for the ATV 4k (HDMI2 on receiver), regardless of the last input was for example my HTPC (on HDMI2 on receiver)

So freaking annoying, because I use a Harmony remote with activities, and the activity for HTPC is chosen but the receiver changes input to Apple Tv... then I have to choose another activity (PS4 for ex) and the back to HTPC...

How can I stop the HDMI-CEC on Apple TV? Or do any of you see another solution?

Apple TV (4th generation), iOS 12.1

Posted on Nov 29, 2018 4:49 PM

Reply

Answer 1

Top-ranking reply

Gafster

Level 1

4 points

Jan 6, 2019 9:47 AM in response to BigZ12

Despite turning off CEC control in my LG TV and Apple 4k TV, the only way I was able to stop the TV from sending a CEC signal to the Apple TV was by inserting an HDMI CEC blocker in its path. This can also be accomplished by simply removing (or bending back) the CEC control line (pin 13, forth from upper right) in the HDMI cable to the Apple TV. Now the TV won't turn on and try to switch to Apple TV when powered on.

Reply

Answer 2

Dec 29, 2018 9:48 PM in response to vazandrew

I ended up turning off Quick Start+ on my LG c7 (general settings) which appears to have solved my issue.

Reply

Answer 3

Dec 31, 2018 1:26 AM in response to mattsolarbrew

LGc7 was also culprit for sending signal to 4kATV which caused it to automatically turn on after I turned it off. Disabled QuickStart+ solved it. Connected components: LGc7, Sony Receiver, AppleTV

Reply

Answer 4

BigZ12 Author

Level 1

34 points

Nov 30, 2018 1:08 AM in response to vazandrew

Thanks for answering.
I'm sorry to say that it didn't solve the issue. (did try it earlier)
It actually didn't make any difference to the matter.
The ATV is also still listed underneath HDMI2 on the input-list on the LG OLED (ref my picture link to imgur)

Reply

Answer 5

Dec 28, 2018 9:51 AM in response to BigZ12

I am having this same problem, I am using an LG OLED smart TV and I have a yamaha receiver (rx-A1080) connected. Whenever I open HDMI 2 (the port which allows ARC) automatically opens my Apple TV. It seems like the LG TV prioritizes the Apple TV. I even moved the HDMI port on the receiver in which the ATV was plugged into, yet the same thing. It's annoying because I have to get my receiver control to change to another input each time. My guess it has something to do with simplink and HDMI-CEC but I don't really know what to do. I have even reset my LG TV but no luck. Hopefully, I can get this resolved ASAP.

Reply

Answer 6

Jan 3, 2019 6:53 AM in response to longfromorange

I tried all of these possible solutions yet still no luck. The issue I have is that the yamaha receiver I have is plugged into the HDMI-2 port on my LG OLED TV and I have dish network and apple tv 4k right now plugged into the yamaha receiver. So whenever I want to watch dish network, I click on the HDMI-2 icon and I see dish network for a brief second and then the apple tv 4k comes out of sleep mode and takes over. It’s annoying and happens every time, I have checked all possible setting and I am not sure where the problem is happening.

Reply

Answer 7

vazandrew

Level 8

40,948 points

Dec 28, 2018 4:06 PM in response to hercules_41

Best to reach out to LG

Reply

Answer 8

vazandrew

Level 8

40,948 points

Nov 29, 2018 5:44 PM in response to BigZ12

You can go to Apple TV settings - remotes and devices and toggle OFF "control tv's and receivers

Reply