I just installed ubuntu 12.04 on a new computer and now I can't connect to my wireless network. I can connect with a wired connection and on my laptop with a wireless connection so I know my internet is working. I have a ralink 539b controller. I have tried to install the driver for this controller by following some of the other threads but haven't been able to get it to work. Can someone please help?
david@Desktop:~$ lspci | grep Network
04:00.0 Network controller: Ralink corp. Device 539b
lo no wireless extensions.
eth0 no wireless extensions.