Hello,
I've just switched from Openelec on RP2 to LE8 on Odroid-C2. Thanks for LE team for such a great job 
LE8 is working fine but i 've few issues.
one of them :
my setup : the keyboard layout is fr-latin9. I use a french azerty keyboard (Microsoft all-in-one media keyboard).
standart PC keys are working fine, but all multimedia keys are inactives : volume +, -, mute.
Do you know how to configure libreelec to use all media keys ?