Note: do not hit enter too early, the new bugzilla treats this as 'submit'. What I was going to write: closing the lid in KDE (at least - not sure if it's desktop dependant) does not always result in a suspend. I tried this a bunch of times yesterday. Probably 80% success rate, but at the end of the evening I closed the lid and walked away only to find that in the morning the laptop did not suspend. Nothing in /var/log/messages about trying to do so, either -- network remained connected throughout the evening, etc...