My Toshiba Satellite m505-s4940's fans do not turn on automatically, so it was overheating before I learned how to do it manually by using this keyboard-shortcut:fn+F3
I have to do this every time I use my computer!
I really like the performance of Ubuntu, and I just began to use and love it, but I would like to solve this problem.
Hopefully someone can help me, and sorry about my English. It is not my native language : )