I am using a Dell Inspiron e1505 laptop. I can connect with a wired connection but it doesn't pick up the wifi or I cant enable it at all. It's rather frustrating. Any help?
Have you tried System Settings -> Additional Drivers?
Try that but, I've noticed an odd bug when installing Ubuntu in PC's Using Broadcom, before Install you must check if Wifi works normally, if is not that way you should check System Settings -> Additional Drivers and enable them before proceeding the Installation. If you not do this, when you try to install the additional drivers after ubuntu installation they are never detected properly.
Check Network Manager - does it have an Enable Wireless entry? If so, ensure that it's checked. If not, then the driver for your wireless device probably hasn't been loaded. Do
This is the actual steps to follow, some times wifi card may block.
Check if the wifi card is blocked (Terminal)
Restart the network:
I got the same problem to my laptop the above step does't work for me unfortunately this worked for me try this if the above does't work for you.
Actually I followed 2 step to enable wireless in my PC
Step 1 : Removed the bcmwl-kernel-source package
Step 2 : Installed the firmware-b43-installer package.
And then rebooted my PC .
Finally got my work done. :)