[tavoc]

What happens if you do: xrandr --output eDP1 --off ?

 Tested the TV with a Amlogic S905X with Leia Build and the same HDMI Port/Cable. With this device the frame adjustment works fine. I can choose betwee 23,98, 24, 30, 50 and 60Hz.

Does anyone with a Intel Baytrail System can have a look a the possible refreshrates?
@Milhouse Is it possible to go back all the different versions to see where it was working and then go back to last version as a daily driver?  

 As said above it is a kernel bug and not solvable within kodi -> bugs.freedesktop.org is the next step. 

Thanks,

I will open a ticket.
In the meantime I have tested every milhouse kernel build till March 2017, even a stable Libreelec 8.2.0.
In all versions I have the same behaviour, eDP1 and HDMI1 are connected.

Strange that I am the first to notice
Last question. Is it possible to add a refreshrate manually? (in amlogic its a file disp_cap)