Date: Fri, 09 Sep 2005 01:01:06 +0900 From: Hajimu UMEMOTO <ume@freebsd.org> To: "Kevin Oberman" <oberman@es.net> Cc: acpi@freebsd.org Subject: Re: Another acpi_thermal nit Message-ID: <yge4q8vsg59.wl%ume@mahoroba.org> In-Reply-To: <20050908153235.BFA955D08@ptavv.es.net> References: <20050908153235.BFA955D08@ptavv.es.net>
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Hi,
>>>>> On Thu, 08 Sep 2005 08:32:35 -0700
>>>>> "Kevin Oberman" <oberman@es.net> said:
oberman> It would really be nice to be able to slow the system below where
oberman> acpi_thermal has lowered it. I just don't know if this is a matter of
oberman> code or a BIOS issue with no way out.
Yup, I understand your needs. But, it is rather by design of
acpi_thermal. However, you can stop passive cooling by setting
hw.acpi.thermal.tz0.passive_cooling to zero even when passive cooling
is active. You can do the following step:
1) sysctl hw.acpi.thermal.tz0.passive_cooling=0
2) Set your favorite CPU speed by dev.cpu.0.freq
3) sysctl hw.acpi.thermal.tz0.passive_cooling=1
Sincerely,
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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