Description of problem: The CPU is always running on the full clock speed. Cpuspeed is unable to start. Version-Release number of selected component (if applicable): cpuspeed v1.2.1 How reproducible: Steps to Reproduce: 1. Boot system 2. Try to start cpuspeed (service cpuspeed start) Actual results: [root] service cpuspeed status cpuspeed is stopped Expected results: [root] service cpuspeed status cpuspeed started Additional info: Because cpuspeed is unable to start I tried to insert the module manually. [root] modprobe acpi-cpufreq FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.25.9-76.fc9.x86_64/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device [root] ls /lib/modules/2.6.25.9-76.fc9.x86_64/kernel/arch/x86/kernel/cpu/cpufreq acpi-cpufreq.ko powernow-k8.ko System is unable to find acpi_cpufreq.ko, but it does exist. * cpuinfo Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz
That cpu should be using acpi-cpufreq. The "No such device" upon modprobing it indicates either your bios is broken, or frequency scaling is disabled in the bios. Please double-check your bios settings, and if they claim frequency scaling is enabled, check for a bios update, apply it and see what you can see. Chances are rather slim this is actually a software bug.