On Wed, Jul 13, 2011 at 05:40:22PM +0100, Rafał Bilski wrote: > > >Some systems are using 1.2GHz@844mV processors running at 600MHz@796mV. > OK. That's strange. It is 1,2GHz system. Can both ACPI p-states and "e_powersaver" > drivers be running at the same time? no > Can BIOS change processor frequencies without > Linux knowing and without p-states driver loaded? yes. Usually via SMI. some laptops do this when switching between power/battery, and/or when overheating. cpufreq usually detects when this happens and logs messages. Dave -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html