I am not sure what might be the problem in this case. You can check pcworld.com/article/2455972/how-to-fix-your-internet-connection-in-ubuntu-linux.html for more information.Good luckBest regards,Laura
In such a situation the first thing I'd do is checking whether Wi Fi is enabled. If yes, then I'd try rebooting rooter and modem. If that does not help, then you should configure your connection settings in NetworkManager:click Wi Fi icon on the pane...
