Date: Sun, 04 Apr 2010 01:02:36 +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: <4BB7D71C.7080303@chillt.de> In-Reply-To: <1270337076.1455.60.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>
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> I use $20.00 USD aluminum cooling pad with the pair of built-in > USB-powered fans when doing buildworld and/or compiling something > comparably heavy. I have no problem with using such a contraption. What still has me confused though is that I built world and 700 ports before hitting the first thermal-related shutdown. How come the problem only appeared after a couple of months? Dust buildup - that quickly? > It is really hard to second guess what Windows does if _PSV> _CRT. True, it might be doing some magic. The only Windows installation I have is inside VirtualBox - so I cannot investigate what it would do under these circumstances. Right now, I am running with _PSV and _CRT swapped, as per Ian Smith's suggestion (_PSV=85.0C and _CRT=95.0C). While building KDE, the machine just hit 85°C. Passive cooling successfully prevented the temperature from increasing beyond 87°C - but at huge cost: it reduced the CPU speed to 119 MHz. I have upgraded the two stacks of post-it notes at the back of the machine to packs of handkerchiefs. This increases the space between desk and laptop from 1cm to 3cm and seems to reduce temperatures a bit. Dell's stock laptop feet are only 5mm tall... so having to do this is odd yet again. - Bartosz
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