What component is *supposed* to be sending it that signal? I have noticed that in cases where this bug appears, other power management options also fail - trying to suspend again from the gear menu does nothing, I have to run pm-suspend from the cli. This indicates to me that some whole underlying subsystem is getting confused, and that other components may also need to be kicked - NetworkManager is just the most obvious one people notice right away.
What component is *supposed* to be sending it that signal? I have noticed that in cases where this bug appears, other power management options also fail - trying to suspend again from the gear menu does nothing, I have to run pm-suspend from the cli. This indicates to me that some whole underlying subsystem is getting confused, and that other components may also need to be kicked - NetworkManager is just the most obvious one people notice right away.