After a fresh install of Ubuntu on their laptop some people are having overheating issues, fan always on and consequently short battery life.
There's an extremely easy solution for that.
Install TLP, a tool that will take care of your laptop's life.
Open the terminal (Ctrl + Alt + T) and type the following commands:
sudo add-apt-repository ppa:linrunner/tlp sudo apt-get update sudo apt-get install tlp tlp-rdw sudo tlp start