hi all i just recently installed ubuntu 12.04 and since install i havent been able to get wireless internet to work. when i plug in the ethernet cable it works i just dont have wireless. i have been searching around and have run out of things to do. here is the terminal i was just doing:


dell@dell-Inspiron-1501:~$ lspci -nn | grep 0280
05:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)
dell@dell-Inspiron-1501:~$ rfkill list all
0: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
dell@dell-Inspiron-1501:~$ lspci -nn | grep 0280
05:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)
dell@dell-Inspiron-1501:~$ sudo apt-get install --reinstall bcmwl-kernel-source
[sudo] password for dell:
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 14 not upgraded.
Need to get 0 B/1,202 kB of archives.
After this operation, 0 B of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
bcmwl-kernel-source
Install these packages without verification [y/N]? y
(Reading database ... 169051 files and directories currently installed.)
Preparing to replace bcmwl-kernel-source 5.100.82.38+bdcom-0ubuntu6.1 (using .../bcmwl-kernel-source_5.100.82.38+bdcom-0ubuntu6.1_i386.deb) ...
Removing all DKMS Modules
Done.
Unpacking replacement bcmwl-kernel-source ...
Setting up bcmwl-kernel-source (5.100.82.38+bdcom-0ubuntu6.1) ...
Loading new bcmwl-5.100.82.38+bdcom DKMS files...
Building only for 3.2.0-24-generic-pae
Building for architecture i686
Building initial module for 3.2.0-24-generic-pae
Done.

wl:
Running module version sanity check.
- Original module
- No original module exists within this kernel
- Installation
- Installing to /lib/modules/3.2.0-24-generic-pae/updates/dkms/

depmod...........

DKMS: install completed.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-3.2.0-24-generic-pae
dell@dell-Inspiron-1501:~$ sudo modprobe wl