No sound on Pi4 with Libreelec 9.2.7 and HDMI not working

Hi friends,

recently I bought my first Raspberry Pi4 after use during a couple of years the 3b+ model. On the features that it's new is the two HDMI. Well, if I connect the HDMI to the one which is located close to minijack audio it works on my Samsung TV but if I connect to the one of power port, black screen. Anything I miss?

On the other side there's no sound, I try to change options like the pass but nothing. If I connect a headphones to the minijack I have sound. Changing options to the audio out doesn't works. I have installed Libreelec 9.2.7

Thanks!!

Quote from Da Flex

Maybe your device is defective. Try Raspberry Pi OS. If that OS also doesn't work on HDMI-0, order a replacement.

I try with Raspberry Pi OS and sound works fine but same problem with the HDMI. Searching on the internet I read that for HDMI problem I have to modify config.txt with sudo nano /boot/config.txt or maybe should it work by default?

Quote from popcornmix

I don't think I've *ever* heard of a defective pi that has working hdmi video and non-working hdmi audio (the physical pins used are the same for audio and video).

The issue if either going to be a configuration issue, or some incompatibility with the specific display.

If you have another hdmi display, please try that.

If you have no hdmi audio on a clean install of RPiOS, then try creating an issue here.

I try in another TV with HDMI, same result HDMI audio doesn't work and analogue yes. I have another SDcard with RPiOS installed and HDMI audio works perfect. I think with this result the more obvious is to think in some Libreelec configuration