I am a new Ubuntu user. Have the 12.10 version. My internet connection was not automatically detected by the network manager, so I used the sudo pppoeconf command in the terminal. and it worked. However, today when I booted my computer. and followed the same command, the internet is not working. The terminal shows the same text as the previous time, but when I open Firefox, it says that the connection is not detected.
Any reason why this should happen? Please help!