Ok, I have found the reason. If I suspend the system through closing lid the system is locked properly but if I use the indicator-applet no screensaver/locking is initiated.
-- Computer no longer locks on suspend or lid close https://bugs.launchpad.net/bugs/428115 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs