coming back up after power failure (UPS)

[James Long]

> Date: Thu, 9 Mar 2006 01:37:21 +0200
> From: Ion-Mihai Tetcu <itetcu at apropo.ro>
> Subject: Re: coming back up after power failure (UPS)
> To: Peter <petermatulis at yahoo.ca>
> Cc: freebsd-questions <freebsd-questions at freebsd.org>
> Message-ID: <20060309013721.3c523303 at it.buh.tecnik93.com>
> Content-Type: text/plain; charset=US-ASCII
> 
> On Wed, 8 Mar 2006 16:39:02 -0500 (EST)
> Peter <petermatulis at yahoo.ca> wrote:
> 
> > On an updated 5.4 box I am using Network UPS Tools (NUT) with an APC
> > Smart-UPS.
> > 
> > All is going very well but I cannot bring my box back up after
> > simulating a power failure.  At the end of the shutdown the screen
> > shows:
> > 
> > "Press any key to reboot"
> > 
> > Obviously this is not the desired outcome.
> > 
> > How can I get my system to go down completely?  Beyond this I
> > understand there may be some BIOS adjustments to be made.
> 
> You should set up your UPS (via NUT) to kill power when you reach this
> stage (and batteries are exhausted), and to restore power to the
> computer when the line power is back again. And set you BIOS to always
> on or last state or what ever you BIOS is calling it.
> 
> I can't say how to achieve this with NUT or if it's possible, but I'm
> sure that sysutils/apcupsd can do it since I use (and maintain) that
> port.

What happens if:

1) power fails
2) NUT detects this and halts the machine
3) power returns before batteries are exhausted

Will the machine sit forever waiting for someone to "Press any key to 
reboot" ?