[MMXT]

In the past (Krypton builds..) I could always wake up kodi from remote if tv and reciever switched on and focused on using rpi2 kodi device.
With more recently LibreELEC builds always needed to use bluetooth keyboard to perform wake up from idle of kodi and then TV remote could take over control of kodi.

I can confirm this. That's why I had to fully deactivate any of the power saving / idle options in libreelec's CEC menu for recent builds. Thus (or plus...? not sure if there is a causal connection) my AVR never goes into standby with recent builds, no matter if "silent audio signal output" is active or not, even if there is no audio output for a very long time...