Okay,so few months back I read a post somewhere, dont remember where but it was on how to disable the lock screen. Now that I disable whenever the monitor switches off the system hangs. I remember Editing using gedit to do that. How do I re enable Lockscreen? I'm not talking about just removing it from the menu, im talking about disabling it completely. How do I re enable it?
/etc/default/acpi-support deals with this sort of function. Perhaps LOCK_SCREEN=true is commented out with the #
If it is so, try uncommenting it and it might fix your problem, you might have to restart your computer too I should add.
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@Joshua How stupid of me. I had just turned lock screen off from Ubuntu tweak. Sorry for wasting your time.