linux-kernel - Re: shutdown with toshiba portege

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Message-ID: <20120928132354.GG28937@mwanda>
Date:	Fri, 28 Sep 2012 16:23:55 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	François Boisson 
	<user.anti-spam@...son.homelinux.net>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: shutdown with toshiba portege

On Fri, Sep 21, 2012 at 04:57:53PM +0200, François Boisson wrote:
> Le Thu, 20 Sep 2012 20:42:34 +0200
> François Boisson  <user.anti-spam@...son.homelinux.net> a écrit:
> 
> > Hey 
> > 
> > I have a problem which seems to be related to shutdown for a Toshiba portege
> > (it's seems that the problem is also on other Toshiba, on VAIO cw5, y
> [...]
> > If i shutdown the computer and wait some hours, the power consumption of the
> > computer is not null, it's about the same as the power consumtion during a
> > suspend of computer. In fact
> > 
> > Boot and halt with:
> > Windows 7 ---> No power consumption after
> > Linux 2.6.37-486-PAE --->  No power consumption after
> > Linux >= 3.0  ---> Power consumption (about 45-50 mW if acpitool is correct)
> [...]
> 
> Well can anybody just tell me the sequence of shutdown and power of a x86
> computer in then linux kernell, or just how to verify that a device is power
> off with a printk, or where to search or even only where is the part of code
> doing this. There is many documentation about use device but nothing about
> power off.
> 

So your Toshiba is going into suspend instead of power off...

There are several ways that computers shutdown but modern systems
use ACPI.  It could be that the 2.6.37-486-PAE was using a
different method.  I've CC'd the ACPI list.

regards,
dan carpenter
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