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Accepted
arauzo
Asked: 2014-10-31 23:41:04 +0800 CST

Authentication required before suspend

  • 772

Since the last update of Ubuntu 14.04, when I press the sleep button in my laptop, a pop-up window appears with "Authentication is required for suspending the system".

Password is not requested when closing the lid. However, this doesn't work when another monitor is plugged in.

Is there anything that can be set up (in sudoers or somewhere else) to avoid this password prompt?

suspend

2 Answers

    1. In command line run:

      locate -b org.freedesktop.login1.policy

      The found file is /usr/share/polkit-1/actions/org.freedesktop.login1.policy.

    2. In the file, near line

      <action id="org.freedesktop.login1.suspend">

      check these:

      <defaults>
    <allow_any>yes</allow_any>
    <allow_inactive>yes</allow_inactive>
    <allow_active>yes</allow_active>
</defaults>

    (Source)

    • 20
  2. Best Answer

    Using Polkit

    Add yourself to users group by

    sudo usermod -aG users "$USER"

    You need to reboot your computer after the following steps.

    1. If PolKit version >= 0.106

    You can check version of Polkit by: pkaction --version

    If PolKit version < 0.106, there are NO .rules files but only old .pkla and .conf files because those Polkit versions do not have the Javascript interpreter.

    Just adding a file /etc/polkit-1/rules.d/85-suspend.rules with:

    polkit.addRule(function(action, subject) {
    if (action.id == "org.freedesktop.login1.suspend" &&
        subject.isInGroup("users")) {
        return polkit.Result.YES;
    }
});

    And in Terminal, type:

    sudo chmod 755 /etc/polkit-1/rules.d
sudo chmod 644 /etc/polkit-1/rules.d/85-suspend.rules

    2. If PolKit version < 0.106

    In this case, adding a file /var/lib/polkit-1/localauthority/50-local.d/50-enable-suspend-on-lockscreen.pkla with:

    [Allow suspending in lockscreen]
Identity=unix-group:users
Action=org.freedesktop.login1.suspend
ResultAny=yes
ResultInactive=yes
ResultActive=yes

    In bash, type: 

    sudo chmod 644 /var/lib/polkit-1/localauthority/50-local.d/50-enable-suspend-on-lockscreen.pkla

    More about pklocalauthority

    Using Power Manager settings (not sure if it works)

    In XFCE Power Manager:

    1. Under the Security tab:

      • Set Automatically lock the session to Never
      • Check Lock the screen when the system is going for sleep
    2. Under the Display tab, blank the screen after 15 minutes. Set Sleep and Switch off times to be disabled (greyed out).
    3. Under the System tab, set system sleep mode to Suspend after an half of hour.

    References:

    • 14