Monday, November 15, 2010

How to get more power out of your eeepc and Fedora 14 with the help of Jupiter

Have you noticed that despite your best efforts and best practices you are not able to quite get that promised battery time? Well, I sure have. When I first got my laptop and installed Fedora 13 I was able to get maybe 7-8 real hours while in complete idle more or less (I have the 6 cell 10.5 hour rated battery). This in itself is not bad and I had many setting helping me achieve that including all the tips that "powertop" recommended. Bu the way, if you haven't already installed "powertop" it is a must tool for laptop users to find what is taking your battery power.

After installing Jupiter, I was able to achieve much improved performance.

Jupiter optimizes your power usage by doing several things and giving you additional several features:

  1. It gives uses a CPU governer setting to force your CPU while in battery mode to go to its greatest power saving mode.
  2. It optimizes many of the recommendations given by powertop to save power.
  3. You have an easy quick menu that allows you to quickly toggle bluetooth/wifi/cpu mode on demand.

After installing this, with my wifi working and ~30 screen brightness I had an average power consumption of 6.0-6.2W of power while actively browsing- that is not bad!

A couple of notes/problems:

  • the notify script does not work well with the KDE environment so if you are using KDE, simply delete /usr/lib/jupiter/scripts/notify.
  • Do not install the additional eee package for Jupiter, it is supposed to add a sort of compatible Asus hybrid app but it does not seem to work well at all with this Fedora and Asus eee 1001P.

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