Помогите получить беспроводную работу на MacBookPro8,1

Я практически не имею представления о том, что я делаю, но я установил Ubuntu на свой MacBookPro8,1 в первую очередь потому, что мне нужно было использовать Octave, и я решил, что с таким же успехом могу попробовать все это здесь. В любом случае, я пытался следовать инструкциям в этого ответа , но я получаю следующую ошибку, когда пытаюсь ввести

sudo apt-get install linux-backports-modules-cw-3.2-oneiric-generic-pae

, я получаю

Reading package lists... Done   
Building dependency tree       
Reading state information... Done  
E: Unable to locate package linux-backports-modules-cw-3.2-oneiric-generic-pae  
E: Couldn't find any package by regex 'linux-backports-modules-cw-3.2-oneiric-generic-pae'

I ' Я не уверен, что это значит или что я могу сделать отсюда.

РЕДАКТИРОВАТЬ согласно ответу Вивека, вот подробности из /etc/apt/sources.list

colin@Biff:~$ cat /etc/apt/sources.list
# deb cdrom:[Ubuntu 12.10 _Quantal Quetzal_ - Release i386 (20121017.2)]/ quantal main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ca.archive.ubuntu.com/ubuntu/ quantal main restricted
deb-src http://ca.archive.ubuntu.com/ubuntu/ quantal main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ca.archive.ubuntu.com/ubuntu/ quantal-updates main restricted
deb-src http://ca.archive.ubuntu.com/ubuntu/ quantal-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://ca.archive.ubuntu.com/ubuntu/ quantal universe
deb-src http://ca.archive.ubuntu.com/ubuntu/ quantal universe
deb http://ca.archive.ubuntu.com/ubuntu/ quantal-updates universe
deb-src http://ca.archive.ubuntu.com/ubuntu/ quantal-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://ca.archive.ubuntu.com/ubuntu/ quantal multiverse
deb-src http://ca.archive.ubuntu.com/ubuntu/ quantal multiverse
deb http://ca.archive.ubuntu.com/ubuntu/ quantal-updates multiverse
deb-src http://ca.archive.ubuntu.com/ubuntu/ quantal-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://ca.archive.ubuntu.com/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://ca.archive.ubuntu.com/ubuntu/ quantal-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu quantal-security main restricted
deb-src http://security.ubuntu.com/ubuntu quantal-security main restricted
deb http://security.ubuntu.com/ubuntu quantal-security universe
deb-src http://security.ubuntu.com/ubuntu quantal-security universe
deb http://security.ubuntu.com/ubuntu quantal-security multiverse
deb-src http://security.ubuntu.com/ubuntu quantal-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu quantal partner
# deb-src http://archive.canonical.com/ubuntu quantal partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu quantal main
deb-src http://extras.ubuntu.com/ubuntu quantal main