Comment 5 for bug 99059

We can check if the problem lies with the cpufreq-selector utility or with the cpufreq modules.

Remove the CPU frequency scaling applet, and run the following commands:

sudo echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

sudo cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq

The output of the second command should be 800000?

I assume you have no process running which are using much cpu, to check it you can use the ps aux command and look at the %CPU column. All numbers must be very small (0 to 2).