Stop laptop from suspending when closing lid in lightdm

How do I stop my laptop from suspending when closing the lid under lightdm - the power management settings in xfce or gnome 3 does not seem to apply when the window manager is not running.

Solution 1:

At the bottom of /etc/UPower/UPower.conf, set IgnoreLid=true.

Solution 2:

Run

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

and replace the yes to no in the allow_active tags and replace from "yes" to "no" for inactive tags.

either

• reboot
• exit your X session, alt+ctrl+f1, and run sudo /etc/init.d/lightdm restart

Note: I just tested it, and restoring the values back to yes did not restore the previous functionality... no clue why.

Also, lightdm will still try to sleep, but will be denied. So every time you open the lid, you will get a message box telling the sleep/suspend failed.

this will also prohibit active suspend/sleep

...yet another annoyance that gnome3 brings us