In my Ubuntu 13.04 I was messing around with the network connections without creating backups. Now I have done something to the network after which the Network Manager isn't showing up at top right. I use
ppp and when I run the command
sudo pppoeconf it runs perfectly but it doesn’t connect to the Internet. To connect, I opened another account in Ubuntu and I can connect easily through that account. I used these commands in my older account as far as I recall:
airodump-ng wlan0 airodump-ng eth0
Is there any way to reset the network configuration to the initial installation state?