I have an ASRock E350M1/USB3, which appears to be unsupported by cpufreq: /usr/sbin/dmidecode | grep -i processor Processor Information Type: Central Processor Version: AMD E-350 Processor /usr/bin/cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpufreq@xxxxxxxxxxxxxxx, please. analyzing CPU 0: no or unknown cpufreq driver is active on this CPU maximum transition latency: 4294.55 ms. analyzing CPU 1: no or unknown cpufreq driver is active on this CPU maximum transition latency: 4294.55 ms. -- 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