Date: Tue, 9 Oct 2007 08:32:34 +1000 From: Norberto Meijome <freebsd@meijome.net> To: Lars Engels <lme@FreeBSD.org> Cc: FreeBSD Mobile ML <freebsd-mobile@freebsd.org> Subject: Re: Management of Thermal Message-ID: <20071009083234.2a1b376b@meijome.net> In-Reply-To: <20071008154116.0o3hvbyxggk400k0@0x20.net> References: <20071008172756.2aed69e7@meijome.net> <20071008173604.1e449ca2@meijome.net> <20071008111601.kfrb6qt8isw4owc0@0x20.net> <20071008203558.022fd258@meijome.net> <20071008203733.3128f3b6@meijome.net> <20071008154116.0o3hvbyxggk400k0@0x20.net>
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On Mon, 08 Oct 2007 15:41:16 +0200
Lars Engels <lme@FreeBSD.org> wrote:
> What I can see from yoursystl output is that hw.acpi.cpu.cx_lowest is
> set to C1. You could try to set it to C3. Then the CPU will sleep
> deeper and has some time to cool down.
sounds like a good idea - i'll give it a try.
> Another thing I spotted is hw.acpi.thermal.tz0.passive_cooling=1
> With that setting the CPU is cooled passively AFAIK. So if the fan
> starts to run, it could be that it is not FreeBSD that tells it so,
> but the internal sensors.
hmm i'll check the BIOS ...maybe there's something there too
> Do you have Windows installed on that Notebook? How warm does the CPU
> get there? Or with a Linux live CD?
i can run knoppix - i'll get the sysctls settings out of it and see how they compare....
thanks, Lars
B
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{Beto|Norberto|Numard} Meijome
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