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Thread: Enable Laptop Mode in Kali!

  1. #1
    Join Date
    2013-Mar
    Location
    n0wh3r3
    Posts
    53

    Enable Laptop Mode in Kali!

    Mostly pen-testing distributions have the same issue they consume more battery power. There are a lot of things that we can do to lower the consumption of battery power most of them we already know like

    1. Putting our computer to sleep when it is inactive.
    2. Setting our computer to hibernate mode when battery power is low.
    3. Slowing down the hard disk spin.
    4. Putting display to sleep when it is inactive.
    5. Reducing the back light brightness.
    6. Dimming display when the computer is idle.
    7. Turn off WiFi when not required
    8. Kill all unwanted processes
    9. Hard disk power saving option (hdparm -i /dev/sda if AdvancedPM=yes then hdparm -B 1 -S 12 /dev/sda)

    But one more thing we can do and that is

    Enable Laptop Mode

    We can save our battery energy life by turning on Linux’s laptop mode. Remember not every hardware comes with a laptop mode so we need to check whether our hardware supports laptop mode by executing the following command under root:

    Code:
    nano /proc/sys/vm/laptop_mode
    If you find that the value in the laptop_mode text file is 0 it means that the laptop mode is disabled. Just set it to 5 and save the file to enable the laptop mode.

  2. #2
    Join Date
    2013-Apr
    Posts
    3
    Cool.. I wrote a script to toggle it on or off
    Code:
    #!/bin/bash
    
    currentMode=$(cat /proc/sys/vm/laptop_mode)
    
    if [ $currentMode -eq 0 ]
     then
      echo "5" > /proc/sys/vm/laptop_mode
      echo "Laptop Mode Enabled"
     else
      echo "0" > /proc/sys/vm/laptop_mode
      echo "Laptop Mode Disabled"
    fi

  3. #3
    Join Date
    2013-Mar
    Location
    n0wh3r3
    Posts
    53
    Appreciated @apices. you can make it more interesting for example if you write "lmode on" or "lmode off" in the terminal it will on/off the laptop mode. just give it a try (hint: use command line arguments). If need help then inform me.
    Last edited by Hitman; 2013-06-08 at 18:45.

  4. #4
    Join Date
    2013-Jul
    Posts
    1
    Hello from Uruguay!

    I've just installed Kali in a laptop and can't find where to add the battery icon to the taskbar.
    I tried enabling laptop mode but didn't work.

    Any help would be appreaciated.

  5. #5
    Join Date
    2013-May
    Posts
    26
    Quote Originally Posted by BeRniTo View Post
    Hello from Uruguay!

    I've just installed Kali in a laptop and can't find where to add the battery icon to the taskbar.
    I tried enabling laptop mode but didn't work.

    Any help would be appreaciated.
    You're probably better off creating a new thread in the installing section. Even without laptop mode enabled, my Thinkpads have the battery monitor in the taskbar by default, and by default it shows the status of both batteries (I have an extra-capacity battery installed.) In your post, you should include your hardware information (manufacturer, model.) Links to my power device directories live in /sys/class/power_supply if that helps.

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