how to enable auto power off

[Charles Howse]

> On Thu, 18 Sep 2003, Charles Howse wrote:
> 
> > OK, I just checked the BIOS, and it does have Power 
> Management support,
> > and when I boot, I also see 'ACPI function enable' in the 
> post msgs.  I
> > realize that ACPI is not supported in FBSD < 5.x.  I'm 
> running 4.8-p4.
> >
> > I've never used Power Management on any of my computers, so 
> this is new
> > territory for me.
> > I would assume that I need to set Power Management to 
> 'enabled' in BIOS,
> > or no?
> 
> No.  At least not on the machines I've set up lately.  You 
> need 'device
> apm' (the hints have never been needed on my machines) and
> 'apm_enable="YES"', but that's it.

I've recompiled with the proper lines in my kernel config and rc.conf,
and when I boot, I see:
apm: protected mode connections are not supported
And shutdown -p now does not power off the machine.

Should I assume that the BIOS does not support soft power off?