Firstly, I'm totally new to Linux and Ubuntu. I've installed Ubuntu 12.04 LTS. I've MTS mobile broadband. It is unable to connect in the normal boot. It shows "connecting" and then shows "disconnected". But, on booting ubuntu in recovery mode, the mobile broadband successfully connects to internet!! So, how can I connect to the internet in normal mode? Please help me step-by-step as I'm new to Linux.