Date: Tue, 14 Jul 2009 17:32:44 -0700 From: Chuck Swiger <cswiger@mac.com> To: "Edwin L. Culp W." <edwinlculp@gmail.com> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: Acer Laptop overheating with ACPI error that I don't understand. Message-ID: <129FCECB-CEC3-4E75-8543-5EA1EC06D267@mac.com> In-Reply-To: <7affaed60907141654h29f748cdm95532aa83c4ac08d@mail.gmail.com> References: <7affaed60907141654h29f748cdm95532aa83c4ac08d@mail.gmail.com>
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Hi-- On Jul 14, 2009, at 4:54 PM, Edwin L. Culp W. wrote: > I am having overheating problems with my Acer Aspire laptop. > # uname -a > FreeBSD ed.local.net.mx 8.0-BETA1 FreeBSD 8.0-BETA1 #256: Thu Jul 9 > 07:05:20 CDT 2009 root@ed.local.net.mx:/usr/obj/usr/src/sys/ > ENCONTACTO > i386 > > I've been having this problem for several months and compensating by > reducing dev.cpu.0.freq from 1900 to 1200 and 800 in warm offices. Presumably you should be talking to Acer-- if it overheats badly in normal operation, there's probably something wrong with a fan, temperature sensor, or something. > The errors I'm seeing in the log files are: > > +acpi_ec0: EcRead: failed waiting to get data > +ACPI Exception: AE_NO_HARDWARE_RESPONSE, Returned by Handler for > [EmbeddedControl] 20090521 evregion-531 > +ACPI Error (psparse-0633): Method parse/execution failed [\ > \_TZ_.THRM._TMP] > (Node 0xc4e75960), AE_NO_HARDWARE_RESPONSE > > I'm afraid that I don't understand them. acpi_ec0 is the embedded controller handling ACPI events. It should be responsible for adjusting active cooling measures like fan speed in response to temperature changes. See "man acpi_thermal".... Regards, -- -Chuck
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