Hibernation is deactived by policykit-desktop-priviledges, you can reenable it by editing /var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla I think.
I guess that suspend support has been disabled in the kernel: $ dbus-send --print-reply --system --dest=org.freedesktop.UPower /org/freedesktop/UPower org.freedesktop.UPower.Suspend Error org.freedesktop.UPower.GeneralError: No kernel support Sorry, nothing xfce4-power-manager can do unfortunately... ** Changed in: xfce4-power-manager (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/929537 Title: Cannot suspend with xfce4-power-manager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/929537/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs