Date: Tue, 06 Apr 2010 13:49:37 +0100 From: Bartosz Fabianowski <freebsd@chillt.de> To: "Alexandre \"Sunny\" Kovalenko" <gaijin.k@ovi.com> Cc: freebsd-acpi@freebsd.org, Ian Smith <smithi@nimnet.asn.au> Subject: Re: Spurious thermal shutdowns on Dell Studio 1557 Message-ID: <4BBB2DE1.3090004@chillt.de> In-Reply-To: <1270341153.1455.81.camel@RabbitsDen> References: <4BB69279.6060005@chillt.de> <20100403152134.V35463@sola.nimnet.asn.au> <4BB74BC4.9070409@chillt.de> <20100404012906.I35463@sola.nimnet.asn.au> <1270308642.1455.10.camel@RabbitsDen> <4BB764CC.60500@chillt.de> <1270334546.1455.45.camel@RabbitsDen> <4BB7C937.9050106@chillt.de> <1270337076.1455.60.camel@RabbitsDen> <4BB7D71C.7080303@chillt.de> <1270341153.1455.81.camel@RabbitsDen>
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> I think some of the frequencies, provided by acpi_throttle and TCC are > slowing down your machine without really cooling the CPU. After a couple of days of testing, I believe this did the trick. I reduced the number of frequencies as per Alexandre's tip. I also swapped _PSV and _CRT for good measure (_PSV is now 85°C and _CRT 95°C). I just rebuilt OpenOffice.org, using a parallel build that stresses all cores. The machine did not overheat. The highest temperature it reached was 84°C for a few minutes. This is still high but not too high. I will try hoovering the air vents and keep my eye on things. If they stay stable from here, I will not be bothering with Dell support. Thanks for all the tips, - Bartosz
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