> > > > > I've tried installing cpudyn and cpufreq but I don't > > understand how to configure it and understand if it's actually > > working. Do I need both cpufreq and cpudyn? > > No, one is enough. There's also powernowd, which I have used for over a year without a single hiccup. At least one of cpufreq and cpudyn is suspected to be responsible for locking up the kernel on frequency switching, so it might be worth trying all available options. Michael