In Ubuntu Hardy Heron there is a bug on the cpufre-applet, if you can’t change the frequency of your CPU try this:
- Remove the currently installed cpufreq-applet from the main panel, right-click on the applet and then select "Remove from panel",
- Open a new terminal window
- Change the file mode bits for the applet typing the following comman
#
sudo chmod +s /usr/bin/cpufreq-selector
[sudo] password for <user>:
- type your password
- close the terminal window
- right-click on the main panel
- select the "Add to panel…" item
- from the dialog box that will appear select the CPU Frequency Scaling Monitor
Now you can try to change the frequency of your CPU, it should work fine.
GG1