I am running an Ubuntu VM on Virtual Box. A guest running inside a host system. I am getting quite annoyed with Ubuntu locking the screen quite aggressively. Since the host OS probably already runs screensaver and screen lock, I want to switch off the screen lock in the Ubuntu Guest. I searched a little in order to learn to use `Settings | Privacy | Screen Lock | Automatic Screen Lock Off`.
Then there is a second setting that you may want to adjust. This is under Power settings and it dictates when a blank screen should kick in; it does not force you to login (again) but it still can get in the way: