Here are test builds for a fix to the black screen issue
builds for the s912
https://github.com/cdu13a/CoreELEC/releases/download/rc1/CoreELEC-S912.arm-8.95.4.2rc1.tar
the s905
https://github.com/cdu13a/CoreELEC/releases/download/rc1/CoreELEC-S905.arm-8.95.4.2rc1.tar
Odroid C2
https://github.com/cdu13a/CoreELEC/releases/download/rc1/CoreELEC-Odroid_C2.arm-8.95.4.2rc1.tar
Le Potato
https://github.com/cdu13a/CoreELEC/releases/download/rc1/CoreELEC-LePotato.arm-8.95.4.2rc1.tar