Comment 8 for bug 322590

I looked into this in a bit greater detail, and it seems like this happens when a cpu frequency info module (acpi_cpufreq) isn't loaded into the kernel. It looks like Powerdevil gets the scaling info from Solid, which gets it from HAL, which gets it from acpi_cpufreq (correct me if I'm wrong). Installing cpufrequtils probably worked for me because it loads this module on system startup. Can anyone confirm this? (It only worked for me if I loaded the module BEFORE powerdevil started.)