Lubuntu hibernate Xfce Power Manager "not authorized"

Question

OS: Lubuntu 14.04
Package: Xfce Power Manager
Package Settings:
- On AC > Actions > Put the computer to sleep when inactive for: 15 Minutes
- Extended > Set computer inactivity sleep mode: Hibernate
Intent: hibernate computer after 15 minutes of inactivity
Error message: not authorized
Error time: at hibernation

Answer 1

Follow the instructions for Ubuntu: How do I hibernate my computer?

That is, test first, then create a file /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla with the following content:

[Re-enable hibernate by default in upower]
Identity=unix-user:*
Action=org.freedesktop.upower.hibernate
ResultActive=yes

[Re-enable hibernate by default in logind]
Identity=unix-user:*
Action=org.freedesktop.login1.hibernate
ResultActive=yes

Note that in order to create this file you need root permissions. So, for instance, use sudo nano /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla

Answer 2

I had the same problem under xubuntu and it was due to light-locker which I believe is in use also under lubuntu. Reinstalling light locker fixed the problem permanently for me:

sudo aptitude purge light-locker light-locker-settings
sudo aptitude install light-locker light-locker-settings

I believe that removing and then re-installing fixed a policy problem somewhere.

Answer 3

For Lubuntu 14.04.1 I find /var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla where was

[Disable hibernate by default in upower]
Identity=unix-user:*
Action=org.freedesktop.upower.hibernate
ResultActive=no

[Disable hibernate by default in logind]
Identity=unix-user:*
Action=org.freedesktop.login1.hibernate
ResultActive=no

Change ResultActive to yes for both blocks. If you don't find com.ubuntu.desktop.pkla - try to search any *.pkla file in /var/lib/polkit-1/localauthority folder for some same strings

Answer 4

This is an old question, but just to point out something important, be careful when reinstalling light-locker and light-locker-settings because this action also removes lubuntu-desktop* which could be troublesome.

I would explore the polkit options first. Just chiming in.