No CPU Scaling Driver installed


dstark4

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  • 3 months later...

I had this problem as well (Intel Q6600). The kernel showed acpi_cpufreq module was loaded but cpufreq-info showed "no or unknown cpufreq driver is active on this CPU". I discovered that I had to enable Intel SpeedStep in the BIOS CPU Management settings. After booting the driver was functioning.

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  • 3 weeks later...

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