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Tasklist

FS#35243 - cpupower not working with linux 3.9.2-1

Attached to Project: Arch Linux
Opened by Byron Clark (byronc) - Monday, 13 May 2013, 12:32 GMT
Last edited by Gerardo Exequiel Pozzi (djgera) - Monday, 13 May 2013, 22:07 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To No-one
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
After upgrading to linux 3.9.2-1, cpupower no longer starts at boot. The problem appears to be that neither the acpi nor acpi-cpufreq modules will load. Manually running modprobe results in this error:

% sudo modprobe acpi_cpufreq
modprobe: ERROR: could not insert 'acpi_cpufreq': Device or resource busy
This task depends upon

Closed by  Gerardo Exequiel Pozzi (djgera)
Monday, 13 May 2013, 22:07 GMT
Reason for closing:  Not a bug
Comment by Jan de Groot (JGC) - Monday, 13 May 2013, 14:35 GMT
This is because your CPU is supported by the intel_pstate driver that has been built into the kernel. That driver includes its own governor and is incompatible with anything else than performance or powersave governors.
Comment by Byron Clark (byronc) - Monday, 13 May 2013, 18:25 GMT
Thanks, JGC. Switching to the powersave governor works as expected.

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