about cpufreq-info

waterloo2005 · Apprentice Joined: 26 Aug 2008 Posts: 271

when i run cpufreq-info ,it says : no or unknown cpufreq driver is active on this cpu . My cpu is pentium-m on T43 thinkpad.

how to do with it ?
thanks

d2_racing · Posted: Fri Sep 05, 2008 11:26 am Post subject:

Hi, do you have some frequence scalling inside your .config ?

Also, I think that you need a certain package to enable the CPU Freq.

Paapaa · l33t Joined: 14 Aug 2005 Posts: 955 Location: Finland

What have you enabled here (in kernel):

-> Power management options -> CPU Frequency scaling (under *** CPUFreq processor drivers ***).

Basically you need the correct driver there. On 2.6.26 it should be most likely "ACPI Processor P-States driver". If that fails, then try "Intel Enhanced SpeedStep (deprecated)".

PS. This belongs to Kernel forum.
_________________
Paludis, the way packages are meant to be managed.

i92guboj · Posted: Fri Sep 05, 2008 3:21 pm Post subject:

Moved from Installing Gentoo to Kernel & Hardware.

Not about installing Gentoo, so moved here.

waterloo2005 · Apprentice Joined: 26 Aug 2008 Posts: 271

I use 2.6.25-r7

I select "ACPI Processor P-States driver" in kernel .

Paapaa · l33t Joined: 14 Aug 2005 Posts: 955 Location: Finland

You could try enabling the other option I mentioned above.

Also, this document is related, although doesn't help necessarily in this case:

http://www.gentoo.org/doc/en/power-management-guide.xml
_________________
Paludis, the way packages are meant to be managed.