From: Pavel Machek <pavel@ucw.cz>
To: Tejun Heo <htejun@gmail.com>
Cc: Robert Hancock <hancockr@shaw.ca>,
Michael Sedkowski <sedmich@gmail.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Henrique de Moraes Holschuh <hmh@hmh.eng.br>,
linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
linux-acpi@vger.kernel.org, Thomas Renninger <trenn@suse.de>
Subject: Re: Disk spin down issue on shut down/suspend to disk
Date: Thu, 9 Aug 2007 15:06:35 +0000 [thread overview]
Message-ID: <20070809150634.GA3926@ucw.cz> (raw)
In-Reply-To: <46B8140E.3000509@gmail.com>
Hi!
> >> Oh... crap, so acpi wants to sync cache on shutdown. I wonder whether
> >> it spins down the disk correctly. Does emergency unload count increase
> >> after each power down? Also, please post the result of 'dmidecode'.
> >
> > I know that my Compaq X1000-series laptop does do some kind of ACPI
> > games with the disk on ACPI power off (I assume it is putting the disk
> > in standby before power-off at least). It also does this if you boot
> > into DOS, GRUB, etc. and then hit the power button. Could be if the disk
> > is dumb enough to spin up for sync cache and standby when there is
> > nothing to flush, and the kernel does its own standby, this could cause
> > an extra spinup/down..
>
> Yeah, that seems to be what's going on. I don't think we have any other
> choice than blacklisting those notebooks. This is a mess. How does the
> other OS cope with this?
>
> I'm thinking about using DMI vendor/product match to detect the affected
> systems but I think it would be better to match the ACPI implementation
> directly. Is there a way to match specific ACPI implementation?
Well.. unless they use some SMM trick, it is ACPI AML code telling
kernel to spin the disk down. I guess we could detect that, and simply
ignore the request.
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2007-08-09 15:08 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.bsWpbo79BZgHoaIGhEMfTEBxs54@ifi.uio.no>
[not found] ` <fa.mg6p0itaOQUo/t8deCaYpyqj6Nk@ifi.uio.no>
[not found] ` <fa.RxWYL8z8KktgL8LGZ/cTB2nI1Yc@ifi.uio.no>
[not found] ` <fa.AyyCtZ2yLjC5noHPHtmzn4ffhhE@ifi.uio.no>
[not found] ` <fa.SuAjism+m0z0haqCRVjkc2S978o@ifi.uio.no>
[not found] ` <fa.QgWcLG2hfRb92g4blN61qYfRjlQ@ifi.uio.no>
2007-08-06 23:31 ` Disk spin down issue on shut down/suspend to disk Robert Hancock
2007-08-07 6:41 ` Tejun Heo
2007-08-07 14:28 ` Robert Hancock
2007-08-07 14:37 ` Tejun Heo
2007-08-07 14:45 ` Thomas Renninger
2007-08-07 19:23 ` Michael Sedkowski
2007-08-07 20:09 ` Maciej Rutecki
2007-08-07 20:33 ` Rafael J. Wysocki
2007-08-07 20:41 ` Rafael J. Wysocki
2007-08-07 21:28 ` Maciej Rutecki
2007-08-07 22:30 ` Rafael J. Wysocki
2007-08-08 9:29 ` Michael Sedkowski
2007-08-08 2:56 ` Tejun Heo
2007-08-08 12:24 ` Rafael J. Wysocki
2007-08-09 21:46 ` Rafael J. Wysocki
2007-08-08 2:54 ` Tejun Heo
2007-08-08 14:08 ` Mark Lord
2007-08-08 14:14 ` Tejun Heo
2007-08-08 14:24 ` Mark Lord
2007-08-08 14:30 ` Tejun Heo
2007-08-08 15:21 ` Mark Lord
2007-08-08 15:35 ` Mark Lord
2007-08-08 16:20 ` Tejun Heo
2007-08-08 17:04 ` Mark Lord
2007-08-09 15:06 ` Pavel Machek [this message]
2007-08-09 18:47 ` Rafael J. Wysocki
[not found] ` <fa.Nj/igOoDE6GHsgyWFEo/9WCtE9c@ifi.uio.no>
[not found] ` <fa.usmOl3OVQVx3VExwvKiQI5iAX5Q@ifi.uio.no>
[not found] ` <fa.A9df+SR4FMdI7qZmsXY0xFyurbU@ifi.uio.no>
2007-08-08 0:23 ` Robert Hancock
2007-08-08 12:27 ` Rafael J. Wysocki
[not found] ` <fa.3VfWxxgY+5IvJGIam0al/rUn/Q4@ifi.uio.no>
[not found] ` <fa.WVQYJNYB2uuhgQFoGpK6eCfWazo@ifi.uio.no>
[not found] ` <fa.5IFtia9VWM6ePZjGzb+WVMoHQCY@ifi.uio.no>
[not found] ` <fa.M8tTjYMrntIRJ5aXHPFPjCNEk6k@ifi.uio.no>
[not found] ` <fa.IDurvYCLZ5ArGLsuNcLC3l1CSqQ@ifi.uio.no>
2007-08-11 2:21 ` Robert Hancock
2007-08-08 18:58 Al Boldi
[not found] <fa.kWUtPRLMmU/fKL6dyOOVKsSM0fg@ifi.uio.no>
[not found] ` <fa.EbjjD+/NapKvm3jfMLnkxumomC0@ifi.uio.no>
[not found] ` <fa.dm4O1sGL4RetYq2szbwwJT3cf2c@ifi.uio.no>
[not found] ` <fa.7tYfpSdE8/lmfK5ulSN+/6TRSbw@ifi.uio.no>
[not found] ` <fa.R1sVaL6mATofNd18aEZgwlczb8M@ifi.uio.no>
[not found] ` <fa.Z030SpvZYAHux0f8UtlnJwatsvY@ifi.uio.no>
2007-08-08 0:14 ` Robert Hancock
2007-08-08 4:06 ` Henrique de Moraes Holschuh
2007-08-08 4:26 ` Robert Hancock
-- strict thread matches above, loose matches on Subject: below --
2007-08-06 12:38 Michael Sedkowski
2007-08-05 21:37 Michał sed
[not found] <838f88840708051428p3d65ff42w627af4bc38f57de3@mail.gmail.com>
2007-08-05 21:33 ` Michał sed
[not found] ` <6bffcb0e0709080832o30fb21b5vcd09baa8387efcc0@mail.gmail.com>
2007-09-08 21:29 ` Rafael J. Wysocki
2007-09-09 9:20 ` Maciek Rutecki
2007-09-09 11:35 ` Rafael J. Wysocki
2007-08-06 5:22 ` Tejun Heo
2007-08-06 14:23 ` Henrique de Moraes Holschuh
2007-08-06 14:50 ` Michael Sedkowski
2007-08-06 15:01 ` Henrique de Moraes Holschuh
2007-08-06 15:27 ` Michael Sedkowski
2007-08-06 15:32 ` Rafael J. Wysocki
2007-08-06 17:03 ` Tejun Heo
2007-08-06 18:21 ` Michael Sedkowski
2007-08-06 18:43 ` Tejun Heo
2007-08-06 19:40 ` Rafael J. Wysocki
2007-08-06 19:43 ` Michael Sedkowski
2007-08-06 22:18 ` Michael Sedkowski
2007-08-07 6:56 ` Tejun Heo
2007-08-07 9:18 ` Michael Sedkowski
2007-08-07 9:31 ` Tejun Heo
2007-08-07 12:56 ` Henrique de Moraes Holschuh
2007-08-07 9:30 ` Michael Sedkowski
2007-08-06 23:45 ` Henrique de Moraes Holschuh
2007-08-07 6:53 ` Tejun Heo
2007-08-07 12:51 ` Henrique de Moraes Holschuh
2007-08-07 13:04 ` Thomas Renninger
2007-08-07 13:35 ` Tejun Heo
2007-08-07 13:09 ` Tejun Heo
2007-08-07 13:16 ` Henrique de Moraes Holschuh
2007-08-07 13:32 ` Tejun Heo
2007-08-07 13:45 ` Thomas Renninger
2007-08-07 14:01 ` Tejun Heo
2007-08-09 15:16 ` Pavel Machek
2007-08-09 15:56 ` Thomas Renninger
2007-08-06 19:25 ` Rafael J. Wysocki
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