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    SubjectRe: 2.6.22 regression: thermal trip points
    Len Brown escreveu:
    > On Thursday 02 August 2007 04:40, Knut Petersen wrote:
    >> mainboard: AOpen i915GMm-hfs, AWARD BIOS
    >> cpu: Pentium-M 750 (0.8 to 1.86 MHz)
    >> openSuSE 10.2 with kernel 2.6.22.1
    >>
    >> The cpu fan can not be controled by linux kernel.
    >> The BIOS will switch on the cpu fan a bit above 50 deg. Celsius.
    >> The active and passive trip points both are set to 50 deg. Celsius.
    >> Temperature of the idle cpu at 800 Mhz: 34 to 42 deg. C.
    >> The BIOS never changes the trip points.
    >> Cpufreq does work perfectly.

    On my Toshiba M45-S355 (Toshiba Bios, Pentium M 750 - 0.8 at 1.86GHz,
    Debian Etch) I see the same using Kernel 2.6.21.6

    >> Previously there was the possibility to add something like
    >>
    >> echo "100:0:65:70:0" > /proc/acpi/thermal_zone/THRM/trip_points
    >> echo 2 > /proc/acpi/thermal_zone/THRM/polling_frequency
    >> echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

    I never do that, but see below (Kernel 2.6.21.6):

    cat /proc/acpi/thermal_zone/TZCL/trip_points
    critical (S5): 105 C

    cat /proc/acpi/thermal_zone/TZCL/polling_frequency
    polling frequency: 2 seconds

    cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    ondemand

    Regards,
    Renato S. Yamane
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