Cris_ from your logs it looks like the RPi isn't detecting the AVR - HDMI shows up disconnected in modetest.
Can you try adding drm.debug=0x04 to the end of cmdline.txt?
pastekodi plus modetest outputs from a cold boot (RPi disconnected from power) would be great.
If you don't see the LE splash then ssh in and reboot. Do you see the LE splash now? If yes, please post pastekodi/modetest outputs of that, too.
Also try adding video=HDMI-A-1:1920x1080M@60D (note the "D" at the end) to cmdline.txt. Does this work? Again, pastekodi/modetest outputs would be great.
so long,
Hias