Same problem here. I had to install gnome-screensaver package: sudo apt-get install gnome-screensaver Run: $ gnome-screensaver and then the indicator and Ctrl-Alt-L work
Same problem here. I had to install gnome-screensaver package:
sudo apt-get install gnome-screensaver
Run:
$ gnome-screensaver
and then the indicator and Ctrl-Alt-L work