To preface, I've been using Raspberry Pi 4's for my LibreElec/Kodi/JellyFin clients for a while, and was using the same RPi's when I was using Plex, and all was well. I have RPi4's at three locations, two of which the CEC works perfectly at and the third I've never gotten it working, but while that's not really relevant to this topic, I'll touch on it in a minute.
I acquired a NUC with a 7th Gen i3 that supports H265 decoding and whatnot, and so far, it seems to be working really well. It, unsurprisingly, seems to be quite a bit faster than the RPi4's. The one thing I haven't gotten any part of is the CEC. On the RPi, in the location I'm testing the NUC ('Mancave Theatre'), I've never gotten CEC working, although it was listed in devices in LibreElec. I believe the reason it hasn't worked is because the RPi, a FireTV, 4K BlueRay player and XBox are all plugged into my Sony A/V receiver and the output on the receiver is then connected to an input on the TV. I suspect the receiver is intercepting/blocking the CEC signals to/from the TV. If anyone has any ideas as an aside, I'm all ears as I'd love to have it work. But on topic, on the NUC, I don't even have a CEC adapter listed. I did some reading suggesting disabling CEC in the BIOS, which I tried (It was enabled by default), but no change. Still no CEC adapter listed. Now, I may never be able to get CEC to work in this particular location due to the topology, but it does work at my other two locations, and based on my initial perceptions, I'm inclined to gather a few more 'older' NUCs for my Jellyfin clients in place of the RPi's. But at the other two locations, if I can't get CEC working, that's a non-starter.
What I was able to find suggesting that CEC wasn't supported 'yet' was from back in 2017 or 2018, and I think for 8th gen based NUCs, but here we are in 2023, so I'd think a 7th gen would be totally 'figured out' by now.
Does anyone have any thoughts/suggestions on how to get it to CEC to work in LibreElec/Kodi on a 7th gen based NUC?