Description of problem: Recently compiled kernels (kernel-2.6.24+) no longer contain the cpufreq modules necessary for controlling cpu speed on many Intell and AMD machines. p4-clockmod powernow-k6 powernow-k7 powernow-k8 speedstep-centrino speedstep-ich speedstep-lib speedstep-smi How reproducible: modprobe [type one of the cpufreq modules] modprobe p4-clockmod Actual results: FATAL: Module p4_clockmod not found Additional info: Using a file manager to view the compiled kernel modules for the cpufreq shows all of the above mentioned modules as missing. /lib/modules/2.6.24.3-50.fc8/kernel/arch/x86/kernel/cpu/cpufreq /lib/modules/2.6.24.3-34.fc8/kernel/arch/x86/kernel/cpu/cpufreq /lib/modules/2.6.24.3-12.fc8/kernel/arch/x86/kernel/cpu/cpufreq Under the source code, look in the following sub-directory: arch/x86/kernel/cpu/cpufreq
p4-clockmod : useless. powernow-k6 : only present in the 586 kernel powernow-k7 : non-modular, built-in powernow-k8 : non-modular, built-in speedstep-centrino: deprecated by acpi-cpufreq speedstep-ich: non-modular, built-in speedstep-lib: non-modular, built-in speedstep-smi: non-modular, built-in