I updated my Dell Inspiron 1405 to Ubuntu 12.04. Wifi is not working.
When I plug in Ethernet cable, it still does not connect to the Internet and hence I am unable to down load any driver updated. I have Dell wireless drivers on a USB drive but don't know how to use an .exe file in Ubuntu. I'm a first time Linux user--please help.
Thanks for the feedback. Ethernet is working now. Wifi still not. I tried to use following command as found on similar questions:
sudo apt-get remove bcmwl-kernel-source sudo apt-get install bcmwl-kernel-source
then restarted the laptop. No solution yet to wifi. Additional drivers in system settings shows Broadcom STA wireless driver as active. Any ideas what could be wrong here?