About a month ago, I installed Ubuntu 14.10 on Lenovo T430 removing the current OS Windows 7. First two - three weeks everything was working smoothly. After then, my laptop started to overheat and battery life started to drain quicker. It fell down from 2.5 hours to approximately 1 hour. Although I have been using it for more than a month I am still new to Ubuntu. Any help is appreciated.
For all supported versions of Ubuntu
You can install TLP, a power management tool, to improve the battery life and reduce overheating.
TLP brings you the benefits of advanced power management for Linux without the need to understand every technical detail. TLP comes with a default configuration already optimized for battery life, so you may just install and forget it. Nevertheless TLP is highly customizable to fulfil your specific requirements. You can obtain TLP in one of 2 ways.
Since Wily, TLP is available by enabling the Universe Repository and issuing the commands
sudo apt-get update to update the package list
And to install tlp and it's recommended packages
sudo apt install tlp tp-smapi-dkms acpi-call-dkms
If you wish to install from the PPA.
Open a terminal an enter the following commands:
sudo add-apt-repository ppa:linrunner/tlp sudo apt update sudo apt install tlp