Ubuntu disable password request after suspend/hibernate

This solved the issue of password request after suspend:

1. System→Preferences→Screen Saver

• uncheck: “lock screen when screen saver is activated”

2. Type gconf-editor in a terminal.

• Under apps/gnome-power-manager/locks check: “use_screensaver_settings”.
• Uncheck “hibernate” and “suspend”.

This still gives me the possibility to lock the screen manually or using blueproximity.

Ref: http://ubuntuforums.org/showthread.php?t=1466504

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