Date: 30 Oct 2003 10:55:25 -0500 From: Dan Pelleg <daniel+bsd@pelleg.org> To: Brad Karp <bkarp+@cs.cmu.edu> Cc: freebsd-mobile@freebsd.org Subject: Re: "deeper sleep mode" support in -STABLE? Message-ID: <u2she1qra8i.fsf@gs166.sp.cs.cmu.edu> In-Reply-To: <20031030145714.E6C1643FB1@mx1.FreeBSD.org> References: <20031030145714.E6C1643FB1@mx1.FreeBSD.org>
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Brad Karp <bkarp+@cs.cmu.edu> writes: > Hello, all. > > I read Marko Zec's post to -mobile with great interest: > > http://www.freebsd.org/cgi/getmsg.cgi?fetch=176046+181234+/usr/local/www/db/text/2003/freebsd-mobile/20031019.freebsd-mobile > > This post offers a nifty patch to use the new "deeper sleep" mode supported > on P-III-M, IV-M, and "Centrino" Pentium Mobile processors. Marko reports > that he gets 18% additional battery life with the LCD on using this mode > vs. the "HLT" idle loop method used in -STABLE today, and 22% longer life > with the LCD off. > > The patch he posted: > > http://www.tel.fer.hr/zec/BSD/pm/4.8-ich-ds.patch > > Have others tried his patch and had good luck with it? I've got a ThinkPad > X31, and am considering giving it a go. I presume it will apply reasonably > cleanly to 4.9-RELEASE, though I've not tried yet. > > Also: are any committers looking at this patch for inclusion in either the > -STABLE or -CURRENT branches? (Or does ACPI achieve the same power savings > that this patch does?) > > Many thanks to Marko for passing this patch along! > > -Brad, bkarp@cs.cmu.edu The patch applies, but not cleanly, and doesn't compile. Marko told me in personal mail he's planning to work on -STABLE support. -- Dan Pelleg
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