Не могу получить доступ в интернет

Рекомендую сначала подключить ноутбук через LAN, а затем посмотреть, есть ли дополнительные драйверы для установки.

Также я нашел это:

    STA - No Internet access

If you do not have any other means of Internet access on your computer, you can install the bcmwl-kernel-source package from the restricted folder under ../pool/restricted/b/bcmwl on the Ubuntu install media.

Note: The bcmwl-kernel-source package depends on the linux-headers packages so you may need to first retrieve the appropriate package(s) from the online repositories. A running LiveCD/LiveUSB environment has these packages (allowing the wireless to work), but an installed system may not. Make sure you have the linux-headers package that matches your current kernel version, plus the appropriate generic header packages so that they are automatically updated on a kernel upgrade. To find out your current kernel use the command:

uname -r

To find what linux-headers packages you have installed use the command:

dpkg -l | grep headers

Systems installed from CDROM can add the install CD as a package source and install bcmwl-kernel-source using apt-get as above. However, if you want to do it manually then the instructions are as follows:

Navigate the install media and install the packages listed below by double clicking OR install the packages consecutively from a Terminal (in the commands below the install media is mounted at /cdrom, but yours maybe different):

../pool/main/d/dkms

cd /cdrom/pool/main/d/dkms
sudo dpkg -i dkms*

../pool/main/p/patch

cd /cdrom/pool/main/p/patch
sudo dpkg -i patch*

../pool/main/f/fakeroot

cd /cdrom/pool/main/f/fakeroot
sudo dpkg -i fakeroot*

../pool/restricted/b/bcmwl

cd /cdrom/pool/restricted/b/bcmwl
sudo dpkg -i bcmwl-kernel-source*

Из этой темы: Проблемы с Wi-Fi с lenovo g580 и Ubuntu 12.10

Для этого вы должны подключиться с помощью LAN .