How to make xscreensaver stop from promiting for user input
Sometimes xscreensaver will prompt the user to enter their password thinking they are trying to unlock the computer.
This is annoying!
The Reason
xfce4-power-manager
is simulating fake KeyPress events.
This basically means your computer thinks someone is pressing the keyboard and thus stops your screensaver and offers a login menu.
This will usually happen every 30 seconds or so.
Solution
The instant solution is to close xfce4-power-manager
killall xfce4-power-manager
More permanent Solution
I never had any issues removing the power manager on any pc I have worked on.
sudo apt-get remove xfce4-power-manager