HDMI CEC doesn't turn on my TV after latest public update anymore (LG C9 + Series X)

Have you checked the TV itself?

I have an LG TV (different model) and sometimes HDMI-CEC is disabled on my Xbox One X's HDMI input after I change audio output (if I want to use my headphones for a while, for example). Its weird, I've never been able to get to the bottom of why
it happens but, sure enough, go to my TV's general settings while on the HDMI input and SIMPLINK (LG's name for HDMI-CEC) is off. Turn it back on and I'm good to go.

- Jason

Hi TexasMaster9351! My name is Ricardo an independent advisor ready to help you with this situation!

HDMI-CEC is supported only on Xbox One X, Xbox Series S, and Xbox Series X. You must also enable HDMI-CEC on your TV.

Xbox Series X|S consoles can use an HDMI feature called Consumer Electronics Control (CEC) to send commands to and from CEC-enabled devices (such as TVs and AVRs) that are connected to the console.

This feature can be turned on and off via the TV & A/V power options settings screen. Press the Xbox button  to open the guide, then go to Profile & system > Settings > General > Sleep mode & startup > TV & A/V power options.

Right now I’m on a 42 inch Samsung QLED 4K HDR set, but before the Series X is out I’m planning on upgrading to the LG C9 or CX in 65 inch. I need that HDMI 2.1 120hz OLED goodness in my life.

Series X. Straight into a 2020 LG CX. Then onto a AVR via arc.

Sorry, no DTS but bitstream DD5.1 works.

DTS only works if I bypass the TV and go straight into the AVR, LG'S won't pass through DTS.

Matt

I wanted to reply since I just came across this issue with my series x and I figured out the issue and it worked for me. I have a LG c9 and I’m using an av receiver and what I did was I went to all settings on my tv> sound> additional settings and then I changed HDMI input audio format to bitstream. I don’t know why it was changed to pcm but it may have been part of an update but since then everything is green now with audio. Hope this helps you guys

As I said on the post, yes, they're both on the latest firmware. The TV's 4k/HDR capabilities work perfectly with the PS4 Pro and with content played from a hard drive. So I don't think the TV is the problem. It's a problem specifically between the Xbox
One X and the TV. So I think the Xbox needs a firmware update for compatibility between its HDMI2.0b output and the LG C9's 2.1 HDMI input.

How can I file a request or report a problem to Microsoft or Xbox so that this gets some attention from support? There doesn't seem to be any way to contact an official channel or Xbox spokesperson for solving this kind of issue.