* Load the cpufreq modules, since these are not loaded automatically

by udev.  The kernel can load governors on demand, but if they are
  not loaded, HAL doesn't know about them and they don't show up in
  the KDE System Settings.

svn path=/nixos/trunk/; revision=22567

modules/config/power-management.nix

@@ -69,6 +69,8 @@ in
       { source = sleepHook;
         target = "pm/sleep.d/00sleep-hook";
       };
+
+    boot.kernelModules = [ "acpi_cpufreq" "cpufreq_performance" "cpufreq_powersave" "cpufreq_ondemand" ];
     
   };