Date: Sat, 3 Nov 2007 10:02:23 -0700
From: Arjan van de Ven <arjan@infradead.org>
To: Theodore Tso <tytso@mit.edu>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>,
       Jens Axboe <jens.axboe@oracle.com>, linux-kernel@vger.kernel.org,
       jeff@garzik.org, linux-ide@vger.kernel.org
Subject: Re: Suspend to ram regression (2.6.24-rc1-git)
Message-ID: <20071103100223.48831355@laptopd505.fenrus.org>
In-Reply-To: <20071103062304.GA10428@thunk.org>
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	<20071101084145.GA5037@kernel.dk>
	<20071102163708.15304989.kristen.c.accardi@intel.com>
	<20071103062304.GA10428@thunk.org>
Organization: Intel
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On Sat, 3 Nov 2007 02:23:04 -0400
Theodore Tso <tytso@mit.edu> wrote:

> Yep, this fixes suspend/resume on my X61 thinkpad.  Interestingly I'm
> not seeing any power savings with ALPM set to min_power, at least not
> compared to what I get after suspend and resuming (which mysteriously
> cause the power utilization of my laptop to drop by a watt --- maybe
> that is engaging ALPM as part of the suspend process?  I dunno).


ALPM seems to help only if your disk is idle for 2 seconds or more;
unfortunately several standard linux desktops have the disk spin up all
the time via all kinds of things.... there's some "standard guilty"
ones if you're interested in chasing this down..
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