Keyboard shortcut for suspend in Ubuntu

So I’ve got this Samsung X900 laptop where Ubuntu won’t suspend ( automatically ) when I close the lid . Ubuntu already has this documented at help.ubuntu.com , and by the way : impressive docs Ubuntu ! .
It seems to be possible to fix this with a samsung firmware upgrade , but that exe file seem to be for windows only ( looking into that later ) .

For now I found this nice little hint over at askubuntu.com, I can manually suspend the machine from cli with

$ dbus-send --system --print-reply --dest="org.freedesktop.UPower" /org/freedesktop/UPower org.freedesktop.UPower.Suspend

So I just mapped that command to Alt+s via custom keyboard shortcuts in Ubuntu settings, and I’m 99% satisfied .
I’ll reach for 100% satisfaction later when I’ll go for that windows firmware update .

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