Re: Ubuntu issue : Wireless connected but no internet!
you may have to re-install the drivers. Use the ndiswrapper to do this. It is a wrapper for Windows drivers. Wireless and Linux are a pain! Mine used to work and then gone. Just stopped for some reason.
Also a lot of times what happens is your HOST OS, must have WiFi enabled for the actual chip to be enabled. So if on your Dell, you have a button or switch somewhere to turn WiFi on:
[List=1][*] Log into Windows[*] Turn the switch on, making sure you have a connection[*] Log out and into Ubuntu
This worked for me a couple of times, and then THAT stopped working. Currently, I have no wifi on Ubuntu.... I'm sure its an easy fix, but I work on my desktop almost elusively at home, so I haven't bothered to look into it.