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Thread: HOWTO: Install and configure i8kmon for configurable automatic fan speed control

  1. #61
    Join Date
    Aug 2013
    Beans
    1

    Re: HOWTO: Install and configure i8kmon for configurable automatic fan speed control

    I wrote this guide on my blog:
    Keenformatics: How to solve dell laptops fan issues in Ubuntu

    It's a mix of different guides I found on the internet, and I thank the author of this thread for his post.
    But there's still a problem for me: sometimes i8kmon gets overwritten by (I think) the default fan behaviour. So, even if the temperature is lower than the one I set with i8kmon, the fans start running; to stop them I need to stop and restart i8kmon.

    Any help about this issue?

  2. #62
    Join Date
    Jun 2013
    Beans
    5

    Re: HOWTO: Install and configure i8kmon for configurable automatic fan speed control

    Quote Originally Posted by michalt View Post
    I tried the new version from the ppa. My system is Dell Vostro 3360. The problem with i8k is that it introduces microfreezes any time the system is polling for the temparature and fan or is setting fan speed. This makes the utility unusable. Same with the version provided by ubuntu and this one. Would be very nice if you can debug this.
    I'm working on this. If you are interested in the discussion, it is going here.

  3. #63
    Join Date
    Dec 2011
    Beans
    21

    Re: HOWTO: Install and configure i8kmon for configurable automatic fan speed control

    The OP and others have used i8kutils to set the fan speed successfully, but experience that it is immeiately changed back/overridden. This is schedueled SMM BIOS sessions. A workaround is to disable the BIOS fan control, which can be done with a trick. I have described it here, along with complete instructions on how to install and use i8kutils, and some general notes on fan control on Dell laptops:

    http://askubuntu.com/questions/63588/how-do-i-get-fan-control-working/398635#398635


    I have successfully used this method on my Dell Latitude E7440.

  4. #64
    Join Date
    Jan 2014
    Beans
    2

    Re: HOWTO: Install and configure i8kmon for configurable automatic fan speed control

    I just bought a dell inspiron 3521, which has only a right side fan. I've installed i8kctl and set up a conf file in /etc/i8kmon as follows:

    # Run as daemon, override with --daemon option
    set config(daemon) 0

    # Automatic fan control, override with --auto option
    set config(auto) 1

    # Report status on stdout, override with --verbose option
    set config(verbose) 1

    # Status check timeout (seconds), override with --timeout option
    set config(timeout) 1

    # Temperature thresholds: {fan_speeds low_ac high_ac low_batt high_batt}
    set config(0) {{-1 0} -1 50 -1 50
    set config(1) {{-1 1} 50 70 50 70}
    set config(3) {{-1 2} 70 128 70 128}

    I am able to manually control the fan speed using the gui, or with i8kctl/i8kfan, however, i8kmon is not automatically controlling the fans.

    I started it by: "i8kmon --auto --verbose --nouserconfig" and watched what it was doing while I played a small game to drive up the temperature. It seems like it's still trying to treat the system like it has two fans:

    # exec /usr/bin/i8kfan 1 {}
    1390754042 1.0 A12 6YRWVY1 66 -22 0 -22 0 0 -22
    # exec /usr/bin/i8kfan 1 {}
    1390754047 1.0 A12 6YRWVY1 67 -22 0 -22 0 0 -22
    # exec /usr/bin/i8kfan 1 {}
    1390754052 1.0 A12 6YRWVY1 69 -22 0 -22 0 0 -22
    # exec /usr/bin/i8kfan 1 {}
    1390754057 1.0 A12 6YRWVY1 70 -22 1 -22 0 0 -22
    # exec /usr/bin/i8kfan 1 0
    1390754062 1.0 A12 6YRWVY1 70 -22 0 -22 0 0 -22
    # exec /usr/bin/i8kfan 1 {}
    1390754067 1.0 A12 6YRWVY1 71 -22 0 -22 0 0 -22
    # exec /usr/bin/i8kfan 1 {}
    1390754072 1.0 A12 6YRWVY1 72 -22 0 -22 0 0 -22
    # exec /usr/bin/i8kfan 1 {}
    # exec /usr/bin/i8kfan {} 1
    # exec /usr/bin/i8kfan {} 2

    With only a right side fan, shouldn't all the i8kfan commands be operating on the right fan?

  5. #65
    Join Date
    Jan 2014
    Beans
    2

    Re: HOWTO: Install and configure i8kmon for configurable automatic fan speed control

    Please ignore earlier post, I had misnamed my i8kmon.conf file.

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