linux-kernel - Re: [PATCH] (repost) Fix SMP poweroff hangs

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Message-ID: <20070930175446.GA2472@pul.manty.net>
Date:	Sun, 30 Sep 2007 19:54:46 +0200
From:	Santiago Garcia Mantinan <manty@...ty.net>
To:	Mark Lord <lkml@....ca>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] (repost) Fix SMP poweroff hangs

> 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.

I have followed the poweroff of my distro (Debian unstable) and on getting
to the end of rc 0 it calls halt with options -d -f -i -p. So it does call
it with the -p you asked for. BTW, this halt comes fom Debian's sysvinit
version 2.86.ds1-38.1 in case that matters, but as I said it is working ok
for .22.

> then edit /etc/init.d/halt and hardcode the "-p" parameter
> inside there onto the "halt" command line(s).

That init.d/halt is the one that is calling halt with -d -f -i -p already.

Regards...
-- 
Manty/BestiaTester -> http://manty.net
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