Date: Tue, 09 Jan 2001 12:51:51 -0800 From: Mike Smith <msmith@freebsd.org> To: Mitsuru IWASAKI <iwasaki@jp.FreeBSD.org> Cc: dufault@hda.hda.com, current@freebsd.org Subject: Re: Fan speed control sony vaio lx800 slimtop Message-ID: <200101092051.f09KpqJ00792@mass.osd.bsdi.com> In-Reply-To: Your message of "Tue, 09 Jan 2001 23:47:42 %2B0900." <20010109234742E.iwasaki@jp.FreeBSD.org>
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Note also that Scott Long (scottl@freebsd.org) is also working on this,
you will want to check with him to work out where he's up to...
>
> > Now I'd like to figure out how to turn the damn fan up and down. This
> > machine is quiet under windows but sets the fan to high under FreeBSD
> > and never turns it down. The fan has three settings - 0V, 6V and
> > 12V. Under windows it stays between 0 and 6V.
>
> Thermal management implementation is in our queue. We'll create
> policy manager for ACPI subsystems including thermal (Active, Passive
> cooling etc.). Of course any help would be welcome :-)
>
> > I've tried "apm -h 1; apm -e 1;" hoping something would happen
> > but it still doesn't slow down the fan.
>
> Currently we don't have any means to control fan device (except for
> the machine specific tools).
>
> > If someone can sketch out a road map of what I should do I'll do the
> > dirty work. I don't know about ACPI etc and so would appreciate a
> > kick start. I've picked up the spec but haven't printed it out yet.
>
> You could find `3.10 Thermal Management' for overview and
> `12 THERMAL MANAGEMENT' for detail in ACPI 2.0 spec. Also
> `7.1 Declaring a Power Resource Object' and `10.6 Fan Device'
> may help you.
>
> acpi-jp@jp.freebsd.org is a mailing list for ACPI development.
> # English and Japanese are mixed :-)
> If you are interested in it, please send a mail to
> Majordomo@jp.freebsd.org with
> subscribe acpi-jp
> on body.
>
> Thanks
>
>
>
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