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Thread: How to limit cstates?

  1. #1
    Join Date
    Jul 2011
    Beans
    1

    How to limit cstates?

    I am trying to limit c-states which my laptop uses with those commands:

    processor.max_cstate=2
    intel_idle.max_cstate=2
    but it doesn't work and I have no idea how do it in another way.
    Any help will be appreciate.

    My laptop is Asus N71Ja and I use ubuntu 12.04 64bit.

    Thanks in advance.

  2. #2
    Join Date
    Oct 2012
    Beans
    19

    Re: How to limit cstates?

    In a terminal type:
    Code:
    sudo nano -w /etc/default/grub
    Enter your password when prompted.
    Change the line reading:
    Code:
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    to:
    Code:
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash processor.max_cstate=2"
    Press "ctrl+x"
    Type:
    Code:
    update-grub
    Then restart your laptop.

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