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I'm running my first linux distro: Vortexbox (Fedora based). It's on an old Pentium III machine with a GA-6VX7B-4X motherboard. I would like to have some control over the RPM ...
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  1. #1
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    ACPI Fan Control


    I'm running my first linux distro: Vortexbox (Fedora based). It's on an old Pentium III machine with a GA-6VX7B-4X motherboard. I would like to have some control over the RPM of the CPU fan, I've tried pwmconfig but the motherboard doesn't support pwm. I'm looking at controling the fan via ACPI now. I've been googling it but because the learning curve is so steep am I none the wiser.

    Is it possible to control the fan via any ACPI supportng motherboard?

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    Linux Guru Rubberman's Avatar
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    What version of Fedora is this based upon? IE, what kernel are you running (post output of uname -r)?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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    I'm running Fedora release 14 (Laughlin) and Kernel:2.6.35.11-83.fc14.i686.PAE.

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    Linux Guru Rubberman's Avatar
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    Is there anything under the directory /proc/acpi/fan?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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    Linux Guru Rubberman's Avatar
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    BTW, pwmconfig and fancontrol are intended to work together with lm_sensors. If the mobo doesn't support pwm, and there is no fan entries under /proc/acpi, then you are probably SOL. Does lm_sensors support your mobo?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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    lm_sensors does support my motherboard but it does not have pwm. I won't be at the computer for a few hours is the command I use ls /proc/acpi/fan?

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    Linux Guru rokytnji's Avatar
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    . If the mobo doesn't support pwm, and there is no fan entries under /proc/acpi
    so ls /proc/acpi would be a good starting point to see if fan shows up. Then move on to ls /proc/acpi/fan.
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    Alright, I'll try this when I get home, should be around 5 hours.

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