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I recently installed 12.04 LTS x64 on my old laptop. Works great, but whenever I shut the laptop lid, it goes into suspend, and when I open it back up to use the machine again, the fan goes to 100%. I've tried lm-sensors and fancontrol; those won't work for me because my fans/motherboard don't report back pulse-width modulation... thus no adjusting the fan speed. The temps are nominal at roughly 36 C. This problem did not exist on Windows 7 or 8, which the machine ran before retirement and installation of Ubuntu.

The only way to get the fan to turn back down is to reboot the machine. It's an annoyance, and if I didn't have to run Ubuntu for a few school projects, it'd probably get wiped an another distro would be tried. Any help would be appreciated.

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Take a look at askubuntu.com/questions/372056/… for some ideas. –  hmayag Nov 30 '13 at 8:31
Looks somewhat akin to undervolting, am I right in thinking this? –  nerdenator Dec 4 '13 at 3:56

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