I would like a command I could map to a button or execute within my network.
So far I know the command
sudo pm-suspend but I could not make
pmi action suspend work on either 12.04 nor 14.04 :
Error org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Hal was not provided by any .service files
I also used this supposedly cleaner method :
dbus-send --system --print-reply --dest="org.freedesktop.UPower" /org/freedesktop/UPower org.freedesktop.UPower.Suspend
But all these methods have the same apparent result. When I wake my computer, whether on 12.04 or 14.04, some unfinished business glitches the unity launcher and I have to interact with it to "fix it".
This doesn't happen if I suspend from the unity GUI. Nor does it happen from my laptop where there is a dedicated sleep key. Also there is another clear difference with the GUI method and the above ones, in the clean GUI method (incl my laptop), I have a notification that never appears with the "dirty" methods.
So what function/program/script does unity call when it suspends properly? And how could I map it to a key/event/gesture?