[Bug 359559] [NEW] CPU Frequency locked at maximum

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i've noticed cpu ignores any cpufreq requests and always stays at
maximum.

cpufreq-info output (same for all cores), notice the "current policy"
line:

analyzing CPU 0:
  driver: powernow-k8
  CPUs which need to switch frequency at the same time: 0
  hardware limits: 1.10 GHz - 2.20 GHz
  available frequency steps: 2.20 GHz, 1.10 GHz
  available cpufreq governors: conservative, ondemand, userspace, powersave, performance
  current policy: frequency should be within 2.20 GHz and 2.20 GHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 2.20 GHz (asserted by call to hardware).
  cpufreq stats: 2.20 GHz:100,00%, 1.10 GHz:0,00%

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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CPU Frequency locked at maximum
https://bugs.launchpad.net/bugs/359559
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