I’ve recently switched from ATV1 + openelec to RPi3 + OSMC.
Using a Logitech Harmony remote I had access to a whole lot of options on the ATV1. With the RPi3 + CEC (Sony KD-49X8505) I can do up, down, left, right, OK, Back, Info, Menu but I’m missing things like PageUp, PageDown and the Number Keys.
What else have I not discovered yet? Is there more keys I could use?
Which keys are passed by the TV via CEC are purely determined by how the TV manufacturer have implemented CEC. This can vary widely from manufacturer to manufacturer. Many times, what you get is what you’ve got…