How To : Enable/Disbale hibernate and suspend option in Ubuntu 11.04

Ubuntu Version 11.04

Steps:

1: Open terminal by pressing Alt+Ctrl+t

2: Enter the command given below

      

       sudo gedit /usr/share/polkit-1/actions/org.freedesktop.upower.policy 

   sudo command is used because the editing the file require root privilage and hence it requires password to enter.

3:  At the end suspend and hibernate section you will find two lines(if both are enabled):

       

      <allow_inactive>no</allow_inactive>
      <allow_active>yes</allow_active>

4:  Change yes to no and vice-versa. we assume that in your system both are enabled and you want to disabled it. If it is not the file contain the below lines

          <allow_inactive>yes</allow_inactive>
      <allow_active>no</allow_active>

 and now you have to turn "yes" to "no" and "no" to "yes" to make it enable.

Note : it's preferable to use "gksudo" instead of "sudo" when opening graphical programs, to prevent permission errors