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i have Dell Latitude 5420 laptop and yesterday i have istalled 11.10 Ubuntu. All instalation process was done on battery power, so there was no problem on performance. Today i have plugged in my computer and tried to turn on Ubuntu and there is a problem.

When computer runs on battery power performace is perfect, but when i plug to charge battery all system slows down and mouse moves very slovly.

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Please try to customize the parameters for both modes (baterry/charger) with this tool:

sudo add-apt-repository ppa:webupd8team/jupiter
sudo apt-get update
sudo apt-get install jupiter

This tool also resolve the problem with the excesive baterry consumption present en kernels 2.6.38-3.1.x-3.2.x.

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