Installed Ubuntu, lost WiFi

Can you give the output of:

sudo lshw -C network; lsb_release -a; sudo rfkill list; dmesg | grep -i firm

Thanks

The output is :

*-network:0
       description: Ethernet interface
       product: RTL-8139/8139C/8139C+
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 10
       serial: 00:c0:9f:30:e0:d6
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=full ip=192.168.0.196 latency=32 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=100Mbit/s
       resources: irq:20 ioport:3000(size=256) memory:e2007800-e20078ff
  *-network:1
       description: Network controller
       product: BCM4306 802.11b/g Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 3
       bus info: pci@0000:02:03.0
       version: 02
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: driver=b43-pci-bridge latency=32
       resources: irq:21 memory:e2004000-e2005fff
  *-network DISABLED
       description: Wireless interface
       physical id: 2
       logical name: wlan0
       serial: 00:90:4b:48:90:5b
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=b43legacy driverversion=2.6.38-11-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11bg
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 11.04
Release: 11.04
Codename: natty
0: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no
[ 19.016581] Broadcom 43xx-legacy driver loaded [ Features: PLID, Firmware-ID: FW10 ]
[ 20.501072] b43legacy-phy0 ERROR: Firmware file "b43legacy/ucode4.fw" not found or load failed.
[ 20.501089] b43legacy-phy0 ERROR: You must go to http://linuxwireless.org/en/users/Drivers/b43#devicefirmware and download the correct firmware (version 3).
[ 231.106713] b43legacy-phy0 ERROR: Firmware file "b43legacy/ucode4.fw" not found or load failed.
[ 231.106720] b43legacy-phy0 ERROR: You must go to http://linuxwireless.org/en/users/Drivers/b43#devicefirmware and download the correct firmware (version 3).
[ 266.319063] b43legacy-phy0 ERROR: Firmware file "b43legacy/ucode4.fw" not found or load failed.
[ 266.319070] b43legacy-phy0 ERROR: You must go to http://linuxwireless.org/en/users/Drivers/b43#devicefirmware and download the correct firmware (version 3).
[ 301.255900] b43legacy-phy0 ERROR: Firmware file "b43legacy/ucode4.fw" not found or load failed.
[ 301.255908] b43legacy-phy0 ERROR: You must go to http://linuxwireless.org/en/users/Drivers/b43#devicefirmware and download the correct firmware (version 3).
[ 334.914732] b43legacy-phy0 ERROR: Firmware file "b43legacy/ucode4.fw" not found or load failed.
[ 334.914739] b43legacy-phy0 ERROR: You must go to http://linuxwireless.org/en/users/Drivers/b43#devicefirmware and download the correct firmware (version 3).
[ 373.211029] b43legacy-phy0 ERROR: Firmware file "b43legacy/ucode4.fw" not found or load failed.
[ 373.211036] b43legacy-phy0 ERROR: You must go to http://linuxwireless.org/en/users/Drivers/b43#devicefirmware and download the correct firmware (version 3).
vrs@Valentino3-Pavilion-zd7000-DR341U-ABA:~$ ••••••••

Please proceed with the following Terminal commands:

sudo apt-get update
sudo apt-get install b43-fwcutter firmware-b43-installer

b43-fwcutter exists in the Ubuntu repositories, but you will need a
working wired Internet connection in Ubuntu in order to locate it and
install it.

The only way to do that - in your case - is to connect the pc to the
wireless router using a LAN cable, instead of using wireless.

Then reboot your PC and retest wireless.

Hope it helps.

hello all,
  Thanks for the suggestions so far, but still can't get the wireless working.

I have gone to the following site; http://linuxwireless.org/en/users/Drivers/b43#devicefirmware and download the correct firmware (version 3).
I followed the directions and entered the sudo codes, rebooted, checked for uninstalled software... still no success.

If I can't get the wireless recognized, I'll uninstall and try Fedora. If neither Linux OS works, I guess I'll have to go back to Windows...

Btw - how do you uninstall?

Try these commands instead:

sudo apt-get update

sudo apt-get install b43-fwcutter

sudo apt-get install firmware-b43legacy-installer

Then reboot and retest wireless.

@Valentino Sanchez

I've noticed when you ask about uninstalling Ubuntu, no one helps. Have you figured it out yet?

@Joey and Valentino: there is no such thing as uninstalling an operating system (like Ubuntu, Windows or Mac OS X).

The partition where the operating system (in this case: Ubuntu) is stored, will simply be formatted by the disk partitioner of the next operating system that you will install (which seems to be Fedora in Valentino's case).

So the Fedora install routine will allow you to install Fedora side by side next to Ubuntu or use the whole Ubuntu partition for use by Fedora....

Thanks everyone, for all the information and advice. subsequently, I have reinstalled windows. thanks again.