no, it's not. If I start it manually from the command line, then:
- locking the screen by clicking on the "lock" icon works
- by right-clicking on the "lock" icon and selecting "Lock Screen" works
- clicking on the "shutdown" icon and selecting "Lock Screen" gives no reaction
$ ps auxw|grep gnome-screensaver
me 22527 0.0 0.0 8404 896 pts/3 R+ 09:07 0:00 grep gnome-screensaver
$
no, it's not. If I start it manually from the command line, then:
- locking the screen by clicking on the "lock" icon works
- by right-clicking on the "lock" icon and selecting "Lock Screen" works
- clicking on the "shutdown" icon and selecting "Lock Screen" gives no reaction