[ubuntu] I Want my laptop CPU Freq. to automatically run at full speen when on AC power

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http://ubuntuforums.org – Here's the deal. There is an applet that will let me change my CPU freq. when it's plugged into an AC outlet. The thing requires me to input my password each time. In an older version, I used to be able to have it default to the highest CPU freq. every time the thing was plugged into the wall. How can i do that in 8.10? I know it's possible to edit this setting somewhere, but I can't find it. Thanks. (Hardware)