I'm new to Ubuntu, spent all day trying to get this working, now I think I could use some help, please.
I have a Dell Latitude D600, dual-booting XP and Xubuntu 12.04. I discovered it's got a Broadcom BCM4309 wireless card [14e4:4324] (rev03).
I started tying to use Settings > Additional Drivers, but this crashed my machine with a Kernel BUG at include/net/cfg802.11.h:2209! invalid opcode:0000 [#1]smp
Next I went to the documentation and found instructions to install first the b43 driver and then separately the b43 legacy driver (my card was listed for both). I configured the network settings. But no joy.
Next I found documentation with instructions for a ndiswrapper install. I blacklisted the previous drivers, then downloaded a new one from Dell, installed and loaded using ndisgtk. Still no joy.
Then I found the sticky at the top of this forum, uninstalled what I had inc. a purge of the bcmwl-kernel-source, reverted the blacklisting and installed linux-firmware-nonfree. Still no joy.
I've eliminated the issue some users of this laptop had with trouble discovering the Fn F2 key turns the wifi on and off.
I hope I'm not being stupid.
thanks for any help.