I've been using the MATE screensaver instead of xscreensaver just because when you lock your screen someone can leave you a message. However, I was having a problem where if I actually try leaving myself a message, it never showed up. I got the answer for this from the following wiki page:
https://wiki.archlinux.org/index.php...me-screensaver
Basically, you must install the "notification-daemon" package. Then if someone leaves you a...