Cannot scale frequency of a Core i7 2720QM

Posted by user51414 on Ask Ubuntu See other posts from Ask Ubuntu or by user51414
Published on 2012-03-22T23:38:22Z Indexed on 2012/03/23 5:39 UTC
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intel

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cpu

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frequency

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scaling

I own a Dell Latitude E6520 with an Intel CPU (Core i7 2720QM). After installing cpufrequtils, I get the following message :

cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Veuillez rapportez les erreurs et les bogues à [email protected], s'il vous plait.
analyse du CPU 0 :
  **pas de pilotes cpufreq reconnu pour ce CPU**
  maximum transition latency: 4294.55 ms.

In English : no cpufreq pilot found for this CPU.

Thus my CPU runs always at full speed (2,2 GHz) which consume the battery and shorten its life. I don't either know how to activate turbo mode.

Please help ! Regards,

Al

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