On Wed, 03 Jan 2007 06:10:19 +0100
Jan Danielsson <jan.m.danielsson@gmail.com> wrote:

> Hello all,
> 
>    As far as I understand it, APM is "the old tech", and ACPI is the
> "new tech". i.e. they are mutually exclusive. Right?
> 
>    But ACPI is such a complex beast that it is not completely (and
> properly) implemented in most systems.
> 
>    Is this about right, or is it completely wrong?
> 
>    I read somewhere that you need apm enabled for NetBSD to shut the
> power off on i386 systems (and amd64, I assume). But if I have ACPI,
> but not APM, shouldn't that be able to handle shutting the power off.
> At least in theory?
> 
ACPI can indeed shut the power off.  The problem is that laptop support
is incomplete.  You may or may not be able to suspend; you may or may
not be able to resume with all of your devices working.


		--Steve Bellovin, http://www.cs.columbia.edu/~smb