Recover wireless of Ubuntu on MacBook Air 4,2

1. sudo apt-get --reinstall install bcmwl-kernel-source
2. sudo modprobe -r b43 ssb wl brcmfmac brcmsmac bcma
3. sudo modprobe wl

Broadcom 802.11 Linux STA wireless driver source

Wireless with dead-simple Debian install

I had to do these steps to get wireless working with dead-simple install of Debian.

1. Most commands done as root user
2. There may be missing steps, let me know, it was a mess to get working, and I don't recall all steps perfectly

Steps:

1. run this the whole time as root to see changes as they occur, or not
1. watch -d 'ip addr;echo =====;ip link;echo =====;ip route'
2. install broadcom drivers for my network card
1. Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller
2. /etc/apt/sources.list
1. deb [arch=amd64,i386] ftp://ftp.fu-berlin.de/pub/unix/linux/mirrors/debian/ wheezy non-free
3. aptitude update
4. aptitude install firmware-brcm80211
3. add your user to netdev group and restart X
1. netdev:x:113:yourusername
4. load network card kernel modules into the kernel
1. modprobe brcmsmac
1. don't use the "-r" option, only works to reload, not initial load
2. /etc/init.d/dbus reload
1. no idea what this does or if necessary
5. apt-get install wireless-tools 
6. verify
1. lspci -v
1. shows kernel module used, or not if failed to load, see last line per section for kernel module loaded for that device
2. lsmod | grep brc
1. shows list of kernel modules loaded
2. else, they failed to load
3. ip link
1. see if there is a wlan0
4. iwlist scan
1. returns wireless networks in the area
7. apt-get install apt-get install wicd-gtk wpasupplicant
8. run wicd-gtk and try to connect that way, otherwise, do below
9. /etc/network/interfaces
1. #auto wlan0 # comment this out unless you want device started on boot
2. iface wlan0 inet dhcp
3. wpa-ssid YOURSSID
4. wpa-psk YOURWIFIPASSWORD
5. gateway YOURGATEWAYIP
10. ifup wlan0