[Bug 669865] [NEW] acpi-cpufreq doesn't set the cpu frequencies right on macbook 2, 5

Launchpad Bug Tracker 669865 at bugs.launchpad.net
Tue Nov 2 12:55:13 UTC 2010


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No matter which governor and/or frequency I set via cpufreq-set, the 2 cores on my macbook 2,5 are always running at the slowest frequency, ie 1.60 ghz, according to cpufreq-info readings *from hardware*.
According to cpufreq-info readings from cpufreq-core, the frequency varies, but it doesn't.
In other terms, "/sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq" always reports "1596000" (1.60 Ghz), no matter what "/sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq" is reporting.
According to "Documentation/cpu-freq/user-guide.txt":


cpuinfo_cur_freq :              Current frequency of the CPU as obtained from
                                the hardware, in KHz. This is the frequency
                                the CPU actually runs at.

scaling_cur_freq :              Current frequency of the CPU as determined by
                                the governor and cpufreq core, in KHz. This is
                                the frequency the kernel thinks the CPU runs
                                at.

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

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acpi-cpufreq doesn't set the cpu frequencies right on macbook 2,5
https://bugs.launchpad.net/bugs/669865
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