From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Santiago Garcia Mantinan <manty@manty.net>
Subject: Re: [PATCH] (repost) Fix SMP poweroff hangs
Date: Mon, 1 Oct 2007 22:05:13 +0200
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Cc: Mark Lord <lkml@rtr.ca>, linux-kernel@vger.kernel.org
References: <46FC20B7.4000606@rtr.ca> <46FFDB29.9040400@rtr.ca> <20070930175446.GA2472@pul.manty.net>
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On Sunday, 30 September 2007 19:54, Santiago Garcia Mantinan wrote:
> > I'd say your problem is more of a distro issue,
> > in that the method you are using to shutdown
> > is not actually requesting "poweroff".
> 
> > That last mess above ("System halted.") comes from kernel_halt(),
> > rather than the expected message ("Power down.") from kernel_power_off().
> 
> > So, try using the "poweroff" command instead of "halt",
> > or try using "halt -p".  If neither of those work,
> 
> Well it works ok with 2.6.22 powering off and saying so right before
> powering off, with some references to ACPI. On 2.6.23-rc8 however it doesn't
> seem to get that far.

There was a bug in 2.6.23-rc8 that caused this to happen.

It's been fixed in the later -git kernels
(commits 2f3f22269bdf702311342c5d106dfdd7347d1c3e,
853298bc03ef65e3eb392f5d61265605214ee8fb).

Greetings,
Rafael
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