Date: Thu, 02 Aug 2007 15:29:36 -0700 From: Nate Lawson <nate@root.org> To: Warner Losh <imp@bsdimp.com> Cc: acpi@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG, ume@FreeBSD.ORG, gahr@gahr.ch Subject: Re: [patch] enhance powerd(8) to handle max temperature Message-ID: <46B25AD0.70706@root.org> In-Reply-To: <20070802.115713.71149193.imp@bsdimp.com> References: <46AE8F78.1060203@root.org> <20070801.211718.1683324313.imp@bsdimp.com> <46B20F91.5080709@root.org> <20070802.115713.71149193.imp@bsdimp.com>
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Warner Losh wrote: > From: Nate Lawson <nate@root.org> > Subject: Re: [patch] enhance powerd(8) to handle max temperature > Date: Thu, 02 Aug 2007 10:08:33 -0700 > >> M. Warner Losh wrote: >>> I keep getting the system shutting down on my HP by FreeBSD because >>> the temperature exceeds the _CRT value. Maybe there's something wrong >>> with my values, since it happens a lot: >>> >>> hw.acpi.thermal.min_runtime: 0 >>> hw.acpi.thermal.polling_rate: 10 >>> hw.acpi.thermal.user_override: 0 >>> hw.acpi.thermal.tz0.temperature: 0.0C >>> hw.acpi.thermal.tz0.active: -1 >>> hw.acpi.thermal.tz0.passive_cooling: 1 >>> hw.acpi.thermal.tz0.thermal_flags: 0 >>> hw.acpi.thermal.tz0._PSV: 90.0C >>> hw.acpi.thermal.tz0._HOT: -1 >>> hw.acpi.thermal.tz0._CRT: 94.0C >>> hw.acpi.thermal.tz0._ACx: 40.0C -1 -1 -1 -1 -1 -1 -1 -1 -1 >>> >>> Note: temperature is always 0.0C. >>> >>> What can I do to help my situation, if I really want the kernel doing >>> the cooling? >> Your embedded controller is timing out. Thus you're getting a bogus >> value for _TMP. >> >> Those settings for _CRT appear correct. It's the "measured" temperature >> that is wrong. > > So how do I track down the problem? I'm tired of the system just > shutting down when I'm building OOO or even something simpler like > doing a buildworld... You do what's #1 on my list, which is rewrite the EC driver event model (yet again) and figure out if it's possible to automatically detect which workarounds are needed. Linux requires you to specify boot-time flags to select polled or event-driven work. -Nate
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