So, here is the problem:
I'm running the latest version of Armbian buster on an Orange PI PC+2E and it seems this system doesn't support a proper shutdown function: all it does is print "reboot: system halted" and the screen remains on.
Is there a way to turn the screen off (at least) after system halted? maybe a script that runs right before shutdown ?
If I from tty type "setterm -blank force" the monitor goes off, but if I type "sudo setterm -blank force && sudo poweroff" the screen turns off and then back on and stays on. Why?
Is there a command that survives the halt without turning the monitor back on again?
None of the solutions posted here Execute a command before shutdown worked.