Date: Sun, 4 Apr 2010 01:59:21 +1100 (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: <20100404012906.I35463@sola.nimnet.asn.au> In-Reply-To: <4BB74BC4.9070409@chillt.de> References: <4BB69279.6060005@chillt.de> <20100403152134.V35463@sola.nimnet.asn.au> <4BB74BC4.9070409@chillt.de>
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On Sat, 3 Apr 2010, Bartosz Fabianowski wrote: > I have tried spoofing Windows Vista - no joy, nothing changes. > > Overriding the _OS variable had no effect as the DSDT actually checks _OSI. I > applied the patch in kern/121504 and overrode _OSI with "Windows 2006". > Unfortunately, this had no effect on thermal settings at all. > > Any other ideas for what to try? No, apart from maybe overriding _CRT and/or _PSV, perhaps swapping them? You called changing these a hack, but a hack's fine if it works :) My Thinkpad T23 has 90C _PSV, 96C _CRT, but I've yet to see it hit 90C; the last buildworld got it to about 86C, and that was in our summer. Perhaps see if you can get it to start passive cooling at say 80C, with _CRT set at maybe 90C, to see whether passive cooling handles the load? Apart from feeding it a can of air, hopefully someone else has an idea? cheers, Ian
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