Shutdown PC but Power didn't turn off (Linux)

1. Try Check your kernel, did u have enable apm and acpi?

dmesg |grep apm
dmesg |grep acpi

If it's not enable, try to re-compile your kernel with apm and acpi enable


2. If still not work, try to append lilo in /etc/lilo.conf

append="acpi=force"
or
append="apm=power-off"

Try one of them.

Good Luck !!!

:)