I’ve decided to create a thread here after searching the forums and not getting the right information.
With both my previous Nvidia Shield TV, as well as S905 box running Libreelec, CEC has always worked out of the box perfectly for my setup, namely, using my TV box remote to do everything I needed: power on projector and AVR, power off all devices, volume control for my AVR etc. Most importantly volume control my passthrough audio.
Similarly, I would like my Vero 4K+ remote to control my passthrough audio on my AVR but I can’t get it to work.
I have upgraded my projector early in the year to an Optoma UHD40 which seemingly does not support CEC so perhaps that is the cause of my problems. The AVR (Denon AVR-X1400H), HDMI cables, etc is all the same and known to be working and set up correctly.
I don’t mind getting my hands dirty, it’s just I have no idea what to do further.
For starters here’s what I see when I run cec-client: https://paste.osmc.tv/zebovonigu.coffee