Date: Thu, 23 Jun 2005 11:34:30 -0300 From: Matthew Flanagan <flanagan.matt@gmail.com> To: freebsd-acpi@freebsd.org Subject: Changing temperature threshold Message-ID: <7cd06a2d050623073452e3c3f9@mail.gmail.com> In-Reply-To: <7cd06a2d05062205331d03372c@mail.gmail.com> References: <7cd06a2d05062205331d03372c@mail.gmail.com>
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Hi everyone, [I haven't got the needed information from freebsd-questions, so I'm=20 reposting it here.] I`ve installed a FreeBSD 5.4-STABLE and I was building some ports when=20 suddenly my system shut down. Upon rebooting it and checking=20 /var/log/messages, I found the following lines: Jun 21 16:01:30 bell root: WARNING: system temperature too high, shutting down soon! Jun 21 16:01:40 bell kernel: acpi_tz0: WARNING - current temperature (60.0C) exceeds safe limits Then I realized what had happened. My acpi_thermal sysctl's are: hw.acpi.thermal.min_runtime: 0 hw.acpi.thermal.polling_rate: 10 hw.acpi.thermal.tz0.temperature: 50.0C hw.acpi.thermal.tz0.active: 0 hw.acpi.thermal.tz0.thermal_flags: 1 hw.acpi.thermal.tz0._PSV: 50.0C hw.acpi.thermal.tz0._HOT: -1 hw.acpi.thermal.tz0._CRT: 60.0C hw.acpi.thermal.tz0._ACx: 50.0C -1 -1 -1 -1 -1 -1 -1 -1 -1 When I try to raise hw.acpi.thermal.tz0._CRT to 85C (which is the=20 threshold in the BIOS setup) it doesn't work: bell# sysctl hw.acpi.thermal.tz0._CRT=3D3580 # 3580 tenths of Kelvin=3D85C sysctl: oid 'hw.acpi.thermal.tz0._CRT' is read only I've tried /etc/sysctl.conf as well, but I get the same error. Now, my question is: how do I change this value? I've read several manpages (acpi(4), acpi_thermal(4), acpiconf(8), loader(8), and many others) and checked the handbook, to no avail. Can anyone point me to the right direction? Thanks a lot, Matt
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