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Message-ID: <20071103100223.48831355@laptopd505.fenrus.org>
Date: Sat, 3 Nov 2007 10:02:23 -0700
From: Arjan van de Ven <arjan@...radead.org>
To: Theodore Tso <tytso@....edu>
Cc: Kristen Carlson Accardi <kristen.c.accardi@...el.com>,
Jens Axboe <jens.axboe@...cle.com>,
linux-kernel@...r.kernel.org, jeff@...zik.org,
linux-ide@...r.kernel.org
Subject: Re: Suspend to ram regression (2.6.24-rc1-git)
On Sat, 3 Nov 2007 02:23:04 -0400
Theodore Tso <tytso@....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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