I also tried this:
- Go to \Configfiles\sleep.conf.d (in Windows) or /storage/.config/sleep.conf.d (over SSH).
- Rename sleep.conf.sample to sleep.conf
- Open sleep.conf and remove this line: SuspendMode=false
- Reboot, enjoy.
But it didn’t help. Still cannot turn on Coreelec after turning off. Any other advice?