I have an Orange Pi PC Plus running the mainline Debian Stretch desktop version of Armbian, but lately I've been using it headless. 

 

When I'm logged in over ssh and shutdown it down using "sudo shutdown -h now", the ssh connection drops and the board's LED flashes then shuts off, giving every indication the board is off.  However, power consumption doubles (increasing from ~1.2W to ~2.4 W)!  The problem persists as long as the board is powered, so I presume the board is hung and never fully shutdown.

 

Any thoughts as to what could be causing the board to hang when shutting down? 

Hello, I think, my problem is similar. After I downloaded and installed last Armbian version with mainline kernel in Orange Pi PC Plus board, in attempt to shut down both desktop and console systems, the last message in the console screen is "system halted". The console doesn't turn off. Any idea of how to avoid the problem?

You might be interested to read this whole thread: https://forum.armbian.com/topic/8961-error-pcsi-system-shutdown/