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Thread: lm_sensors not reporting fan speed

  1. #11
    Join Date
    Jun 2009
    Location
    Alabama
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    2,232

    Thumbs up Re: lm_sensors not reporting fan speed

    Quote Originally Posted by habana View Post
    I've now discovered that make install has to be run again after a kernel upgrade
    Sure.

    Tim
    Cyberpower PC, Core i5 2500 3.3 gHz, 8GB DDR3, ATI 6770 1GB, Samsung BX 2440 LED 1080p, 1 TB SATA III, 2 TB SATA III, Siduction Linux 64-bit

  2. #12
    Join Date
    Jan 2006
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    194
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: lm_sensors not reporting fan speed

    kevbelisle


    I have the same problem, using XSensors, I don't see the fan speeds.
    Your solution seems to work.
    I don't understand how to download the "Makefile" and "it87.c" files or where you download them from.
    Can you help me on this As I am not a specialist on this?

  3. #13
    Join Date
    Jun 2009
    Location
    Alabama
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    2,232

    Arrow Re: lm_sensors not reporting fan speed

    @corvair: Here is the page to find it on: http://www.lm-sensors.org/wiki/Devices Look for Manufacturer ITE in the leftmost column.

    There are several choices. I used the one that says it is for my Z68 motherboard. http://khali.linux-fr.org/devel/misc/it87/ Yours may or may not be the same.

    Good luck,
    Tim
    Cyberpower PC, Core i5 2500 3.3 gHz, 8GB DDR3, ATI 6770 1GB, Samsung BX 2440 LED 1080p, 1 TB SATA III, 2 TB SATA III, Siduction Linux 64-bit

  4. #14
    Join Date
    May 2008
    Beans
    11

    Re: lm_sensors not reporting fan speed

    I've updated the kernel in 12.04 using the backported quantal 3.5 kernel. It has the IT87 updated chipset driver. By doing this, there is no need to make the driver for the kernel and updates won't break a manually installed driver.

    After inserting the driver with modprobe:

    sudo modprobe it87

    sensors will report not only the coretemp module's temperatures but will give fan speeds and additional temperatures from the it87 module. The configuration of the temperatures seems okay for the first and third values. The second value is -55 Centigrade, so that is a bit bogus. A correct configuration for the chipset would be nice, but I don't have that. Here is the output that sensors provides once both modules are inserted into the kernel. Also, this is the 3.3.1 version of lm-sensors from the repositories for 12.04 that I'm using.


    coretemp-isa-0000
    Adapter: ISA adapter
    Physical id 0: +52.0C (high = +80.0C, crit = +98.0C)
    Core 0: +45.0C (high = +80.0C, crit = +98.0C)
    Core 1: +52.0C (high = +80.0C, crit = +98.0C)
    Core 2: +52.0C (high = +80.0C, crit = +98.0C)
    Core 3: +50.0C (high = +80.0C, crit = +98.0C)

    it8728-isa-0290
    Adapter: ISA adapter
    in0: +1.04 V (min = +0.00 V, max = +3.06 V)
    in1: +2.04 V (min = +0.00 V, max = +3.06 V)
    in2: +2.94 V (min = +0.00 V, max = +3.06 V)
    in3: +2.95 V (min = +0.00 V, max = +3.06 V)
    in4: +2.23 V (min = +0.00 V, max = +3.06 V)
    in5: +1.20 V (min = +0.00 V, max = +3.06 V)
    in6: +1.52 V (min = +0.00 V, max = +3.06 V)
    3VSB: +3.36 V (min = +0.00 V, max = +6.12 V)
    Vbat: +3.26 V
    fan1: 2122 RPM (min = 10 RPM)
    fan2: 0 RPM (min = 0 RPM)
    fan3: 0 RPM (min = 0 RPM)
    fan4: 798 RPM (min = 10 RPM)
    temp1: +34.0C (low = +127.0C, high = +127.0C) sensor = thermistor
    temp2: -55.0C (low = +127.0C, high = +127.0C) sensor = thermistor
    temp3: +41.0C (low = +127.0C, high = +80.0C) sensor = thermistor
    intrusion0: OK

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