@stephenw10:
Indeed, it probably is due to the required power state for WoL not being correctly supported by the board.
Are you running the latest BIOS?
You might try shutting down from the CLI with shutdown -h vs shutdown -p. Does the console report it's rebooting?
There may be some BIOS additional ACPI power state setting in the BIOS required.
Steve
Yeah at the latest BIOS, unfortunately that dates back to 2013…
Perhaps, I'm doing it wrong but I've been testing halting the system from the command line with /etc/rc.halt, I'll try what you suggest.
Also, not sure about other BIOS settings, the manufacturer says all that's needed is the following:
http://www.ecs.com.tw/ECSWebSite/Support/Support_FAQ_Detail.aspx?MenuID=49&LanID=0&FAQID=2006031952