r...@crclinic-server:~# powertop

< Detailed C-state information is not P-states (frequencies)
                                      Turbo Mode     0.2%
                                        2.81 Ghz     0.0%
                                        2.67 Ghz     0.0%
                                        2.54 Ghz     0.0%
                                        1.60 Ghz    99.8%

Wakeups-from-idle per second : 109.3    interval: 10.0s
no ACPI power usage estimate available

Top causes for wakeups:
  57.4% (317.6)   [kernel scheduler] Load balancing tick
  18.2% (100.7)   squid3

An audio device is active 100.0% of the time:
hwC0D0 Analog Devices AD1989B 

 Q - Quit   R - Refresh   A - Turn HD audio powersave on

r...@crclinic-server:~# cat 
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies 
2801000 2800000 2667000 2533000 2400000 2267000 2133000 2000000 1867000 1733000 
1600000

-- 
Intel i7 930 @ 2.80GHz shows only as 1600Mhz
https://bugs.launchpad.net/bugs/673794
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