linux-kernel - Re: ACPI "Soft-off" power button only rebooting system, not powering off

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Message-ID: <20080918110635.GF27832@elf.ucw.cz>
Date:	Thu, 18 Sep 2008 13:06:35 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Andrew Paprocki <andrew@...iboo.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: ACPI "Soft-off" power button only rebooting system, not
	powering off

On Wed 2008-09-17 08:33:50, Andrew Paprocki wrote:
> On Wed, Sep 17, 2008 at 6:18 AM, Pavel Machek <pavel@...e.cz> wrote:
> > On Wed 2008-09-17 00:50:03, Andrew Paprocki wrote:
> >> I have an AMD / Award BIOS based system which does not properly shut
> >> off when I hold down the power button for 4 seconds. The BIOS is
> >> configured to have "Soft-off" set to "Delay for 4 seconds" which is
> >> supposed to power the machine off if the button is held that long.
> >>
> >> I first thought this could be a BIOS bug, but this *only* appears to
> >> happen while Linux is running. If the computer is running WinXP, it
> >
> > Well, so the BIOS is broken. 4second hold should power down the
> > machine regardless of the operating system.
> 
> Yes, I agree.. I just find it strange that it works on the BIOS screen
> as well as in GRUB, but as soon as Linux boots, it no longer works.
> Since it works under WinXP, there must be some way to get it to work
> properly from the OS side even it if means working around the bug
> somehow.

Try noapic/nolapic/nosmp etc... and ask your vendor to fix the bios ;-).

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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