With F14 Beta RC3, the default actions for 'when power button is pressed', 'when hibernate button is pressed' and 'when suspend button is pressed' are all 'nothing' in xfce4-power-manager configuration. When these values are changed to the obvious - 'Ask', 'Hibernate', and 'Suspend' - they behave as you'd expect.
I think the 'obvious' choices are a little dangerous as we cannot guarantee the system is able to hibernate or suspend. Therefor I'd better not change this in the package but only on the livecd. Are you fine with that?
well, if you know your system can't suspend or hibernate, you probably shouldn't press the keys that make them do that... GNOME has the defaults described and no-one seems to complain about that. -- Fedora Bugzappers volunteer triage team https://fedoraproject.org/wiki/BugZappers
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