I use 3G Modem to connect to internet.
When I connect my modem I can brows, can download anything from internet even i can use apt-get without any problem.
But the problem is somehow Network Manager cant understand that I have an active wireless network connection.
For this reason I cant download anything from Ubuntu Software Center as it shows that I have no internet connection.
Also I cant use VPN for this reason.Whats the problem?