my toshiba's fan does not work automatically

my toshiba satellite m505-s4940 does not turn the fan on automatically, it was overheating before, but i learn to do it manual, with Fn+F3, so i have to do it every time i use it,,, i really like the performance of ubuntu, i just began to use it and i love it, but id like to solve this problem, hope you can help me...

sorry about my english it isnt my native language :)

From ubuntu cabral27

• This has been reported here and here and here (kernel).

  There appears to be one workaround:

  1. Boot up
  2. Suspend
  3. Wake it up
  4. ACPI should work (fans should work, the lid should sleep it, etc)

  If this doesn't work, I recommend you don't run Ubuntu until it's fixed as letting it overheat is very dangerous to the hardware.

  Of course if you can help the kernel devs find a fix for this, the faster you get the fix.

  cabral27 : thanks man, i really apreciate your advise and time,
  From Oli

• You can use the toshiba utils Certain Toshiba's laptops to control fan speed.

  http://www.buzzard.me.uk/toshiba/index.html

  From Mike