I realise lately that my laptop does not go into suspend mode when i close its lid. I use windows 7 x64 Home Premium, dual booting Precise Pangolin 12.04.1 with all updates installed under Gnome 3.4 shell. Currently i do not have any issues about my system. I can use "suspend" command manually from the user drop down menu and it works. I already got "suspend when lid is closed" option set in power options but this doesnt work. Anything wrong?