Problem with Lock Screen

[e1]

Hi all

I just installed the backbox and it seem .. there are no trouble at all.. After I installed, I run the apt-get update && apt-get upgrade ... but why I can't lock my computer after I click the Lock Screen button. Normally in Ubuntu when we click the Lock Screen ... the screen will go dim ... ;-) but mine with the Backbox.. nothing happen.

Please help me.

Regards
e1

[raffaele]

try to install xscreensaver:

Code Select Expand

sudo apt-get install xscreensaver