FreeBSD cannot power down

[Unga]

Hi all

After a kernel recompilation on i386 RELENG_7 (not the latest), I cannot power down the machine.

kldstat shows acpi.ko is loaded.

It used to switch off but now the "shutdown -p now" halts the system with following messages:
The operating system has halted.
Please press any key to reboot.

What else could I check to identify the cause? 

Appreciate your ideas on this.

Kind regards
Unga