Ubuntu 12.04 connects but we can not browse: here is how to solve the problem

 

The new Ubuntu 12.04 brought plenty of new features: from the improvements of Unity in the new HUD, Update many packages, among them are also Network Manager updated to new version 0.9.4 that brings many improvements, available from this page.

Some users have reported that once were able to connect, but can not navigate: this problem is quite common especially for users who use the Internet via mobile devices such as keys, cell phones, or using Ubuntu in Virtualbox.

The problem is due to DNS, which are not properly recognized and managed by Network Manager, but here's how to solve this problem.

First you need disconnect from the internet, this is done, we start the terminal and type:

For Ubuntu

sudo gedit /etc/resolv.conf

For Kubuntu, Xubuntu, Lubuntu

sudo nano /etc/resolv.conf

And insert as shown below:

# Generated by NetworkManager
nameserver 8.8.8.8
nameserver 8.8.4.4

Then save (if we use nano we have to press CTRL+X then S)
and try to connect through our browser, and if we need to navigate to lock the configuration and to do that, we finish the connection and terminal type:

sudo chattr +i /etc/resolv.conf

Now we locked configuration and Network Manager can not modify it and then we can connect without problems.

To unlock the configuration, always terminal type:

sudo chattr -i /etc/resolv.conf

In case of problems, please do not hesitate to report commenting on this article.

VIA : www.lffl.org