Comment 12 for bug 599352

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Martin Pitt (pitti) wrote : Re: [Maverick] Need to not display hibernation in UI if do not have enough swap space

As for the reason, it should be mentioned in /var/log/pm-hibernate.log, or at least in /var/log/kern.log. But those are mostly suitable for attaching to bug reports. As for an error message for display, upower should provide that through DBusErrors.