CPU fan control - Debian

This is a discussion on CPU fan control - Debian ; I've installed etch on my laptop. During the time I used Windows, I feel the CPU temperature is lower. And now the CPU fan works when the CPU temperature is higher than 70C and stops (or runs at a lower ...

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  1. CPU fan control

    I've installed etch on my laptop. During the time I used Windows, I
    feel the CPU temperature is lower. And now the CPU fan works when the
    CPU temperature is higher than 70C and stops (or runs at a lower
    speed) when it's 55C or lower. I'd like to know if it's possible to
    adjust the threshold temperature like making it run faster well below
    70C. Thanks!


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  2. Re: CPU fan control

    Hi,

    On Son, 28 Jän 2007, Manu Hack wrote:

    > I've installed etch on my laptop. During the time I used Windows, I
    > feel the CPU temperature is lower. And now the CPU fan works when the
    > CPU temperature is higher than 70C and stops (or runs at a lower
    > speed) when it's 55C or lower. I'd like to know if it's possible to
    > adjust the threshold temperature like making it run faster well below
    > 70C. Thanks!


    welcome to the world of laptops..
    take a look at your /proc/acpi/thermal_zone/ direcory.

    --
    Florian Reitmeir

  3. Re: CPU fan control

    Thanks all, will definitely have a look at cpufreqd. But I ran cat
    /proc/acpi/fan/FAN/state, then it showed status:
    off. When I echo 0 > /proc/acpi/fan/FAN/state, and checked the status
    again, it showed status: on but it still didn't run at high speed
    until the temperature went about 70C. Any idea?


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  4. Re: CPU fan control

    On Mon, 29 Jän 2007, Manu Hack wrote:

    > Thanks all, will definitely have a look at cpufreqd. But I ran cat
    > /proc/acpi/fan/FAN/state, then it showed status:
    > off. When I echo 0 > /proc/acpi/fan/FAN/state, and checked the status
    > again, it showed status: on but it still didn't run at high speed
    > until the temperature went about 70C. Any idea?


    very often the FAN is acpi buisness only, and there is no way of changing
    that.

    here some docs about ACPI
    http://acpi.sourceforge.net/documentation/index.html

    and for other answers .. i think the people here need some infos about the
    laptop it self.

    - name
    - brand
    - output of 'lspci'
    - output of 'uname -a'
    - distribution

    --
    Florian Reitmeir

  5. Re: CPU fan control

    Here is some info of my laptop

    Toshiba Satellite A55 s306,
    uname -a:
    Linux debian 2.6.18-3-686 #1 SMP Mon Dec 4 16:41:14 UTC 2006 i686 GNU/Linux

    lspci:
    0000:00:00.0 Host bridge: Intel Corp. 82852/855GM Host Bridge (rev 02)
    0000:00:00.1 System peripheral: Intel Corp. 855GM/GME GMCH Memory I/O
    Control Registers (rev 02)
    0000:00:00.3 System peripheral: Intel Corp. 855GM/GME GMCH
    Configuration Process Registers (rev 02)
    0000:00:02.0 VGA compatible controller: Intel Corp. 82852/855GM
    Integrated Graphics Device (rev 02)
    0000:00:02.1 Display controller: Intel Corp. 82852/855GM Integrated
    Graphics Device (rev 02)
    0000:00:1d.0 USB Controller: Intel Corp. 82801DB/DBL/DBM
    (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03)
    0000:00:1d.1 USB Controller: Intel Corp. 82801DB/DBL/DBM
    (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03)
    0000:00:1d.2 USB Controller: Intel Corp. 82801DB/DBL/DBM
    (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03)
    0000:00:1d.7 USB Controller: Intel Corp. 82801DB/DBM (ICH4/ICH4-M) USB
    2.0 EHCI Controller (rev 03)
    0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev 83)
    0000:00:1f.0 ISA bridge: Intel Corp. 82801DBM LPC Interface Controller (rev 03)
    0000:00:1f.1 IDE interface: Intel Corp. 82801DBM (ICH4) Ultra ATA
    Storage Controller (rev 03)
    0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM
    (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)
    0000:00:1f.6 Modem: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M)
    AC'97 Modem Controller (rev 03)
    0000:01:05.0 Network controller: Intel Corp. PRO/Wireless 2200BG (rev 05)
    0000:01:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB21
    IEEE-1394a-2000 Controller (PHY/Link)
    0000:01:08.0 Ethernet controller: Intel Corp. 82801BD PRO/100 VE (MOB)
    Ethernet Controller (rev 83)
    0000:01:0b.0 CardBus bridge: Toshiba America Info Systems ToPIC95 PCI
    to Cardbus Bridge with ZV Support (rev 33)


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  6. Re: CPU fan control

    2007/1/29, Maciej Rutecki :
    > Manu Hack napisa(a):
    > On HP/Compaq (nx 6310):
    >
    > echo "105:100:100:78:70:60:50" > /proc/acpi/thermal_zone/TZ0/trip_points
    > echo 10 > /proc/acpi/thermal_zone/TZ0/polling_frequency
    >


    Welcome to the world of HP !

    I bought an nx6110 last year. After an update some time ago my fans
    stopped working at all and the thermal protection kicked in at 90
    degrees C.

    I searched the HP support forums and found a lot of people with
    similar problems - erratic fan behavior. What I gathered from there
    is that the reason is buggy acpi implementation in the BIOS, even the
    newest version.

    There are two entries in the kernel bugzilla you might find useful,
    with patches attached:

    http://bugzilla.kernel.org/show_bug.cgi?id=7122
    http://bugzilla.kernel.org/show_bug.cgi?id=5534


    Best regards,
    Rado

  7. Re: CPU fan control

    On Sun, 2007-01-28 at 23:38 -0500, Manu Hack wrote:
    > I've installed etch on my laptop. During the time I used Windows, I
    > feel the CPU temperature is lower. And now the CPU fan works when the
    > CPU temperature is higher than 70C and stops (or runs at a lower
    > speed) when it's 55C or lower. I'd like to know if it's possible to
    > adjust the threshold temperature like making it run faster well below
    > 70C. Thanks!
    >
    >

    try to load some additional modules like

    cpufreq-userspace
    speedstep-centrino || powernow-k7 (for amd's) || powernow-k8 (for amd64)

    write them in /etc/modules on my acer laptop works fine on an hp and on
    a vaio too

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  8. Re: CPU fan control


    Manu,

    there's a slight chance you can adjust something in the BIOS.


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