JFYI, I'm using a Dell Latitude D620 with a broadcomm wireless driver. I'm testing out ubuntu 14.04 LTS for my first time today (I've tried other versions and still prefer backtrack 5 / ubuntu 10.04)
My wireless card was not activating by default, but I found this page and followed these instructions:
sudo apt-get purge bcmwl-kernel-source
sudo apt-get install b43-fwcutter firmware-b43-lpphy-installer
sudo modprobe -r wl
sudo modprobe b43
the third line was bugged, "wl" was not found. So I followed this link as described above:
https://launchpad.net/~eugenesan/+archive/ppa/+sourcepub/3331324/+listing-archive-extra (I chose the amd64 version) which launches ubuntu software center by default...
One trend I've noticed with Ubuntu Software Center is that often it installs 90% of a package and never "finishes" installing the package - and this is what happened again. Regardless, what has worked in the past is to close Ubuntu Software Center (which I did). The package was installed as far as I could tell, but in terminal, I tried "sudo modprobe -r wl" and got the response "wl is busy" so I restarted my pc. Lo and behold, after restart and third attempt at this line "sudo modprobe -r wl" my wifi indicator immediately lit up and it seems to be working fine. Thank you kindly for your help. I just wanted to let fellow linux users know that this worked for me, and also how I had to get it to work. Cheers!
PS I am running on 2gb of ddr2 ram, with a dual-core processor @ approx 1.85ghz... Which means I still prefer backtrack 5 / ubuntu 10.04 for my daily computing needs/desires. I feel ubuntu 12 and 14 (I did not try 13) are too bloated, and while there are some nice ideas I see coming to life, they do not to my knowledge follow the KISS method. Thanks anyways :) I will still give ubuntu 14 a shot on this machine. Much love ~
I might keep ubuntu 14, due to the fact that I am unable to get flash player working in either chromium or firefox with backtrack 5 / ubuntu 10.04; if anyone out there has found a workaround, please send me a link @ firstname.lastname@example.org... Thank you!