Subsystem: Broadcom Corporation BCM4311 802.11a/b/g
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at fe7fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel modules: ndiswrapper

sudo modprobe -r ndiswrapper
sudo apt-get remove ndiswrapper

sudo modprobe b43

sudo apt-get purge bcmwl-kernel-source

wget http://archive.ubuntu.com/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu1~1.3_amd64.deb
sudo dpkg -i bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu1~1.3_amd64.deb