Ubuntu: Xubuntu 15.04 Cannot Suspend when inactive



Question:

I have Xubuntu 15.04 installed and having some issues with Suspend. It Suspends fine when done from the command line or the shutdown menu or even by closing the lid. I have set the inactivity timer to 15 minutes using xfce power manager for suspend. However, it never suspends because of inactivity. When I log back in after the failure to suspend, I see this message on the top right: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied

I have tried some of the solutions online such as the ones here and here but it didn't make a difference.

Anyone has any ideas of things to try. Is there any logs that can tell me what could be wrong.


Solution:1

It looks like your user is not allowed to suspend the PC when not logged in.

Open /usr/share/polkit-1/actions/org.freedesktop.login1.policy
with your favorite editor as root and search for entry
<action id="org.freedesktop.login1.suspend">

Change
<allow_inactive>auth_admin_keep</allow_inactive>
to :
<allow_inactive>yes</allow_inactive>


Solution:2

I had the same issue in Xubuntu 16.04, this fixed it for me:

At the terminal, type:

xfconf-query -c xfce4-power-manager -lv

If the output of the above command doesn't contain the following line:

/xfce4-power-manager/inactivity-sleep-mode-on-battery   1  

then, at the terminal type:

xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/inactivity-sleep-mode-on-battery -n -t int -s 1


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