Comment 30 for bug 44058

I'd like to add my experiences also, with Karmic on an HP laptop dv4000 series. The described behavior is 100% reproducible.

On fresh boot, "Close Lid" doesn't do anything, lid state reported as "open" (even when it's closed). Suspending manually (via menu, or "sleep" button -- Fn F5 on this laptop) works as expected, and opening the lid resumes the laptop. After this event, closing the lid causes suspending.

Another interesting thing is that going from battery to a/c power sometimes causes suspending (battery charged to 100%, and Power Manager set up to actually hibernate if battery power is critically low).