Date: Mon, 08 Oct 2007 15:41:16 +0200 From: Lars Engels <lme@FreeBSD.org> To: Norberto Meijome <freebsd@meijome.net> Cc: FreeBSD Mobile ML <freebsd-mobile@freebsd.org> Subject: Re: Management of Thermal Message-ID: <20071008154116.0o3hvbyxggk400k0@0x20.net> In-Reply-To: <20071008203733.3128f3b6@meijome.net> References: <20071008172756.2aed69e7@meijome.net> <20071008173604.1e449ca2@meijome.net> <20071008111601.kfrb6qt8isw4owc0@0x20.net> <20071008203558.022fd258@meijome.net> <20071008203733.3128f3b6@meijome.net>
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Quoting Norberto Meijome <freebsd@meijome.net>: > On Mon, 8 Oct 2007 20:35:58 +1000 > Norberto Meijome <freebsd@meijome.net> wrote: > >> I'm happy to RTFM....but i don't know where that is :) > > well,i've obviously read the man pages for cpufreq, acpi_thermal and > powerd... > but my brain can't seem to see how it all fits together... cpufreq > is supposed > to be for non-acpi systems...but then if i take it out i can boil water in 2 > minutes on the CPU... > > cheers, > B Hmm, that doesn't sound so good... 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. 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. Do you have Windows installed on that Notebook? How warm does the CPU get there? Or with a Linux live CD?
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