Wireless does not work anymore after software update with Ubuntu 12.10 on a Dell Latitude E6230 [duplicate]

Solution 1:

Your problem looks similar to mine, and I think the new kernel and broadcom drivers are the connection. I ran

sudo apt-get install linux-headers-generic
sudo apt-get install --reinstall bcmwl-kernel-source
sudo modprobe wl

and it worked for me on a Samsung netbook.

Solution 2:

Please check:

lspci -nn

Is it's pci.id 14e4:4727? If so, this may be helpful:

sudo apt-get install linux-headers-generic
sudo apt-get install --reinstall bcmwl-kernel-source
sudo modprobe wl

Solution 3:

Similar thing happened to me, and I believe my answer is more shifted towards the UI but I think it is basically the same thing as DrA proposed:

1. Install linux-headers-generic (via software center or terminal).
2. In sofware origins > Additional drivers tab, check "Do not use this driver" & apply.
3. Then check again to use Broadcomm propietary driver and apply.

In fact this also worked for me in another laptop that had issues with nvidia drivers.