I searched but couldn't find how to uninstall TLP. I installed it but performance is weird. So I uninstalled it through Synaptic but I still have the icon of it running.
As mentioned here in answer #6 https://answers.launchpad.net/ubuntu/+question/249516
sudo apt-get --purge remove tlp
That will uninstall the TLP package and remove all configurartions
Try opening a terminal and issuing the following commands:
sudo apt-get remove tlp
sudo add-apt-repository --remove ppa:linrunner/tlp
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AU cares for high quality answers (and questions). While your answer may provide a viable solution, it lacks an explanation. Can you please edit your answer to elaborate on what these commands are supposed to do? You can also format code and shell commands nicely. – David Foerster Oct 16 '14 at 13:15