Comment 29 for bug 923809

This update still didn't work for me unfortunately.

The following NEW packages will be installed:
  bcmwl-kernel-source
0 upgraded, 1 newly installed, 0 to remove and 325 not upgraded.
Need to get 0 B/1,344 kB of archives.
After this operation, 4,274 kB of additional disk space will be used.
Selecting previously unselected package bcmwl-kernel-source.
(Reading database ... 152206 files and directories currently installed.)
Unpacking bcmwl-kernel-source (from .../bcmwl-kernel-source_6.20.155.1+bdcom-0ubuntu0.0.1_amd64.deb) ...
Setting up bcmwl-kernel-source (6.20.155.1+bdcom-0ubuntu0.0.1) ...
Loading new bcmwl-6.20.155.1+bdcom DKMS files...
Building only for 3.2.0-29-generic
Building for architecture x86_64
Building initial module for 3.2.0-29-generic
Done.

wl:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/3.2.0-29-generic/updates/dkms/

depmod.....

DKMS: install completed.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-3.2.0-29-generic

ubuntu@201204-10857:~$ modinfo wl
filename: /lib/modules/3.2.0-29-generic/updates/dkms/wl.ko
license: MIXED/Proprietary
srcversion: 620417839200A53FF5C4AB5
alias: pci:v*d*sv*sd*bc02sc80i*
depends: cfg80211,lib80211
vermagic: 3.2.0-29-generic SMP mod_unload modversions
parm: oneonly:int
parm: piomode:int
parm: instance_base:int
parm: nompc:int
parm: intf_name:string

dmesg | grep -i wireless
Broadcom BCM4727 802.11 Hybrid Wireless Controller 6.20.155.1 (r326264)

ubuntu@201204-10857:~$ sudo iwlist eth1 scan
eth1 Interface doesn't support scanning : Invalid argument