{"id":90,"date":"2009-12-13T12:55:10","date_gmt":"2009-12-13T17:55:10","guid":{"rendered":"http:\/\/wukenny.host-ed.net\/?p=90"},"modified":"2009-12-13T12:55:10","modified_gmt":"2009-12-13T17:55:10","slug":"aspireone-the-noisy-fan-hack","status":"publish","type":"post","link":"http:\/\/kennywu.info\/?p=90","title":{"rendered":"Aspireone the noisy fan hack"},"content":{"rendered":"
  • Download the acer_ec.pl<\/a> script.<\/li>\n
  • Download the acerfand<\/a> daemon script.<\/li>\n

    Execute these lines in a terminal in the directory you downloaded the above scripts:
    \nchmod a+x acerfand
    \nsudo cp acer_ec.pl acerfand \/usr\/local\/bin\/<\/code>
    \nTo run it straight away:
    \nsudo acerfand<\/code>
    \nTo run it at boot:
    \nIn Ubuntu:<\/em>
    \ngksu gedit \/etc\/rc.local<\/code>
    \nInsert the following line above the “exit 0”<\/em> at the bottom:
    \n\/usr\/local\/bin\/acerfand<\/code>
    \nIn Linpus Linux Lite:<\/em> (default Aspire One installation)
    \nAs root :
    \nvi \/etc\/rc.local<\/code>
    \nPress i to switch to INSERT mode and add the following line at the bottom :
    \n\/usr\/local\/bin\/acerfand<\/code>
    \nPress Esc and type :wq<\/code> to save and quit
    \nOptionally create an \/etc\/acerfand.conf <\/strong>file. The file is just a shell script that sets up to three values. eg:
    \nINTERVAL=5
    \nFANOFF=60
    \nFANAUTO=70<\/code>
    \nThose are the default values, if the \/etc\/acerfand.conf file isn’t found.
    \nINTERVAL<\/strong> is the polling interval in seconds
    \nFANOFF<\/strong> is the temperature at or below which to turn the fan off, if it’s currently on auto
    \nFANAUTO<\/strong> is the temperature at or above which to turn the fan to auto, if it’s currently off.
    \n==========
    \nRead all registers:
    \nsudo perl acer_ec.pl regs
    \nsudo perl acer_ec.pl regs > test.txt<\/code>
    \nRead one register:
    \n# 51 is the address of the register in hexadecimal
    \nsudo perl acer_ec.pl ?= 51<\/code>
    \nWrite value to one register:
    \n# 51 is the address in hexadecimal of the register to be written, and 0 is the value to write, also in hexadecimal.
    \nsudo perl acer_ec.pl := 51 0<\/code><\/p>\n

    Convenient commandline to monitor the temperature. (Register 58 is thought to be CPU temperature, in degrees C):
    \nThis also assumes you’re already root and have made acer_ec.pl executable. eg:
    \n# Become root
    \nsudo su -
    \n# Make the script executable
    \nchmod a+x acer_ec.pl
    \n# Read the temperature and display in decimal every 2 seconds
    \nwatch -n 2 'echo Temp: $[$(.\/acer_ec.pl ?= 58 | cut -f 3 -d\" \")] C'
    \n<\/code>
    \nNB: For this to work, \/bin\/sh must invoke bash. Usually \/bin\/sh is a symlink to \/bin\/bash, but in Ubuntu this is not the default, and as a result the conversion of the temperature from hexadecimal to decimal won’t occur.<\/p>\n

    To change \/bin\/sh to point to \/bin\/bash, on Ubuntu, as root:
    \nln -sfn \/bin\/bash \/bin\/sh<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

    Download the acer_ec.pl script. Download the acerfand daemon script. Execute these lines in a terminal in the directory you downloaded the above scripts: chmod a+x acerfand sudo cp acer_ec.pl acerfand \/usr\/local\/bin\/ To run it straight away: sudo acerfand To run … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[15],"class_list":["post-90","post","type-post","status-publish","format-standard","hentry","category-lamp","tag-aspireone"],"_links":{"self":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/posts\/90","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=90"}],"version-history":[{"count":0,"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/posts\/90\/revisions"}],"wp:attachment":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=90"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=90"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=90"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}