Date: Fri, 10 Dec 2004 12:31:00 -0500 From: Anish Mistry <mistry.7@osu.edu> To: freebsd-acpi@freebsd.org Cc: Josef Karthauser <joe@freebsd.org> Subject: Re: S3 on a Sony VGN-A290 Message-ID: <200412101231.10146.mistry.7@osu.edu> In-Reply-To: <20041210133615.GA1482@genius.tao.org.uk> References: <20041210133615.GA1482@genius.tao.org.uk>
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--nextPart1729139.BVVGGGJJhT Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Friday 10 December 2004 08:36 am, Josef Karthauser wrote: > Grump. I leave my new Sony in S3 and come back to it in the morning to > find that it's run out of battery :/. I thought that S3 was a low > energy state. Anyone else got a similar machine? Is it a problem with > the machine or our ACPI? (I'm running RELENG_5 on it). > > Joe > > ps. I remember some talk a while ago about a native S4 implementation - > FreeBSD suspend to disk. Has there been any progress in this direction? This depends on what the ACPI on your systems does. It sounds like it is=20 similar to my P2110 and that the video adpater isn't turned off,=20 eventhough the backlight goes off when the system goes into S3. I'm using= =20 the acpi_video DPMS patch posted a while back and significantly reduces=20 the power drain while in S3, but there must still be some devices that=20 aren't getting powered down since the power drain when compared to Windows= =20 2000, is still much higher. For example in Windows I can leave the system= =20 suspended on battery for 2 days and only see a few percent drop in the=20 battery level, where as FreeBSD 6-CURRENT I can only leave it suspended=20 for about a day before it kills off the battery. The PCI power state transition code recently added didn't show any affect,= =20 but that was with an older kernel, I'll try again this weekend and double=20 check the compenets are actually entering D3. =2D-=20 Anish Mistry --nextPart1729139.BVVGGGJJhT Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBud1exqA5ziudZT0RAjfHAKCJN70/yEbSI5RXvB8h9hrzbCsU8gCgxSL9 kuMxCyv59TBtNok9FGqD+Vw= =+K4i -----END PGP SIGNATURE----- --nextPart1729139.BVVGGGJJhT--
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