Because dmesg data is store in a limited buffer. Details about the available tickless modes can be found in the kernel documentation. Wheezy simply lacks power management features for that CPU. Retrieved 12 June Please see this document for currently supported Ubuntu releases: Output of dmesg grep -i cpu:

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Visit the following links: BB code is On. So I tried sudo modprobe acpi-cpufreq and other combinations as suggested elsewhere.

CPU frequency scaling

cpufreeq To post a comment you must log in. I had this problem, and I eventually fixed it by loading the coretemp kernel module. When it is run, it sorts the running processes in order of how often they cause the processor to wake up.

Brad Figg brad-figg on Click Here to receive this Complete Guide absolutely free. If this bug atim fixed in the mainline kernel, please add the following tag ‘kernel- fixed-upstream’.

This bug was reported a while ago and there hasn’t been any activity in it recently. Penalver penalvch wrote on I have tried pcufreq times to set it to 1.


For details on installation, configuration and usage see the cphfreq PowerTOP article. Check that the following are enabled:. Comment on this change optional. Please let us know your results. But that’s for another thread I suppose.

Power management/Processor – Gentoo Wiki

CPU frequency scaling is a technique whereby the frequency of a processor can be automatically adjusted “on the fly” to conserve power and to reduce the amount of heat generated by the chip. Also, if you could test the latest upstream kernel available that would cpufre great.

Or at the kernel the cpu governor level: For Intel core processors, this should be selected as default.

Anyway, other people can try this and see if it works. The governor should take into account the load balancing the kernel seems to be doing between cores. You have to use a program which allows to set cpu frequency parameters for your cpu.

Cpuferq bug subscribers Subscribe someone else. See full activity log. Are you new to LinuxQuestions. Though it is easy to solve, if you know what are you looking for.


HowTo/CpuFrequencyScaling – Debian Wiki

cpfureq Its configuration is very limited, though, and I couldn’t find anything related. You should switch to a newer distro, Crunchbang is not supported anymore anyways.

This bug report was marked as Incomplete and has not had any updated comments for quite some time. For instance, when not wired to AC power, most users would like to have the system in a power saving mode. Ryan Thompson rct86 wrote on If you’d like to contribute content, let us know.

They hope these examples will help you to get a better understanding of the Linux system and that you feel cpfreq to try out things on your own. Registration is quick, simple and absolutely free.