Monitors turn back on immediately

[rosscarlson]

Have a multimonitor setup, when I either click on the tray icon or keyboard shortcut all monitors go to sleep but then 2-3 seconds later come right back on. I assume there is some app doing this as I'm not touching the keyboard or mouse, is there any way to keep the screen asleep until I press another keyboard shortcut? That way if either my cat were to step on the keyboard/mouse or some app tried to bring the screen back on it wouldn't be able to until I pressed that sequence.