Enabling acpi_thermal

From: Luke Dean (LukeD_at_pobox.com)
Date: 05/31/05

  • Next message: Lowell Gilbert: "Re: ftp server frustrating" 
    Date: Tue, 31 May 2005 12:25:42 -0700 (PDT)
To: freebsd-questions@freebsd.org

    After having a router literally melt during a period of record-high
    temperatures last week, I've become interested in remotely monitoring the
    temperature of some of my systems.

    I've got two FreeBSD systems running 5.4. Both use acpi, and several acpi
    sysctl variables are present, but the hw.acpi.thermal family is missing.

    At least one of these machines has an internal thermometer because the
    BIOS setup screen can show a temperature. I don't suppose that means this
    thermometer has to be visible to the operating system, but I'm hoping that
    it is.

    I've read the acpi and acpi_thermal manpages. /boot/loader.conf is empty,
    so I'm just getting the defaults from /boot/defaults/loader.conf. Is
    there some simple switch that I can flip to make the hw.acip.thermal
    sysctls appear or should I start down the path suggested in
    http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-debug.html
    for "Fixing your ASL"?

    Also, if these acpi sysctls won't appear, is there any hope that any of
    the temperature-monitoring applications in the ports collection will work?
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