Date: Mon, 5 Apr 2010 16:18:14 +1000 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Bartosz Fabianowski <freebsd@chillt.de> Cc: freebsd-acpi@freebsd.org Subject: Re: Spurious thermal shutdowns on Dell Studio 1557 Message-ID: <20100405152612.E35463@sola.nimnet.asn.au> In-Reply-To: <4BB94BD6.5030804@chillt.de> 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> <4BB8B603.60902@chillt.de> <4BB8BED1.1090004@gmail.com> <4BB8BFBC.4030900@chillt.de> <4BB8CA6E.9010503@gmail.com> <4BB94BD6.5030804@chillt.de>
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On Mon, 5 Apr 2010, Bartosz Fabianowski wrote: > Dana Myers wrote: > > Agreed. I came into this thread late and admit I'm not sure what > > support for CPU throttling is in FreeBSD. Ideally, Notify() events on > > the CPU objects will cause dynamic re-evaluation of the associated > > _PPC object. > > There seems to be plenty of support for throttling. But if the BIOS provides > bogus _PSV and _CRT values, there is only that much FreeBSD can do. That is > how the thread started, with the question: "How come _PSV > _CRT on my > machine and what should I do about it?" Unfortunately this issue appears only to be symptomatic of a larger set of overheating problems with this laptop. I googled "overheating Dell Studio 1557" and the results are plentiful and not at all encouraging. I'd particularly recommend reading through the 8-page thread of the top hit: http://forum.notebookreview.com/showthread.php?t=432243 .. which includes lots of useful info, including ways to work replacement or refund, and a good photo of fan and (dual) heatpipes/sinks arrangement. Apparently models made before sometime in January had a single heat pipe for CPU and GPU (where GPU heat seems to be the main issue, especially for gamers of course) but even the January dual heat pipe redesign and a BIOS update seems not to have resolved issues for many. Dell recently replaced the ATI GPU with another model (again, dmesg may be helpful) and in some cases have bumped the power supply from 90 to 130W, though there's little indication that these issues are yet actually solved. cheers anyway, Ian
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