A few quick ones to help clarify the issue, can you confirm that it still works using the older GNOME network tools?
This page may also help: https://wiki.ubuntu.com/WirelessTroubleshootingGuide
Also verify with this site (https://wiki.ubuntu.com/DapperNetworkManager) that you have edited the /etc/network/interfaces.
A few quick ones to help clarify the issue, can you confirm that it still works using the older GNOME network tools?
This page may also help: https:/ /wiki.ubuntu. com/WirelessTro ubleshootingGui de
Also verify with this site (https:/ /wiki.ubuntu. com/DapperNetwo rkManager) that you have edited the /etc/network/ interfaces.