I’m sure Sam will correct me if I got something wrong here but I believe what you would need to do via ssh…
sudo cp /sys/class/amhdmitx/amhdmitx0/disp_cap /home/osmc/.kodi/userdata/disp_cap
sudo chmod 755 ~/.kodi/userdata/disp_cap && sudo chown osmc:osmc ~/.kodi/userdata/disp_cap
nano /home/osmc/.kodi/userdata/disp_cap
add the missing options, save and exit nano (ctrl+x, y, enter), then reboot.