The Broadcom STA driver does not need an internet connection. It is part of the Ubuntu restricted modules.
If you are not able to get it activated through System->Administration->Hardware Drivers, you can try the following from the Terminal to see if the module is there:
Code:
sudo depmod -a
modprobe -l|grep wl
The first command will rebuild the module dependencies list and then the second command lists the kernel modules that exist containing wl. If the wl module shows up, then you can try the following:
Code:
sudo modprobe -r b43 ssb wl
sudo modprobe wl
sudo iwlist scan
This will remove the possible wireless modules loaded, load the proper one and then scan for wireless sites.
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