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This is a silly one, but I have an instinct to use the triple combination to wake up my desktop, probably a remnant of the Windows years. It happens only once in a very long while, but I'd like to avoid this happening altogether. Is there a way or configuration to get a warning screen rather than having the OS reboot right away when this combination is pressed, or a way to disable this combination altogether from initiating a restart?

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It usually gives a warning. Which version of Ubuntu are you using? –  i08in Nov 17 '13 at 14:26
Using 13.04 desktop. –  matt Nov 17 '13 at 15:33

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