Wi-Fi não está funcionando para o Ubuntu 12.04 (Precise Pangolin) [duplicado]

Question

O Wi-Fi não está funcionando para o meu Ubuntu instalado no Windows 7. No entanto, ele está funcionando ao mudar para o ambiente do Windows. Eu tenho sistemas operacionais duplos na minha máquina.

Aqui estão as saídas de alguns comandos:

lshw -C Network:  
*-network UNCLAIMED  
description: Network controller  
product: BCM43228 802.11a/b/g/n  
vendor: Broadcom Corporation  
physical id: 0  
bus info: pci@0000:02:00.0  
version: 00  
width: 64 bits  
clock: 33MHz  
capabilities: pm msi pciexpress bus_master cap_list  
configuration: latency=0  
resources: memory:f7e00000-f7e03fff  

*-network  
description: Ethernet interface  
product: NetXtreme BCM5761 Gigabit Ethernet PCIe  
vendor: Broadcom Corporation  
physical id: 0  
bus info: pci@0000:0c:00.0  
logical name: eth0  
version: 10  
serial: b8:ca:3a:c4:3f:dd  
capacity: 1Gbit/s  
width: 64 bits  
clock: 33MHz  
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt   10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation  
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.123   firmware=5761-v3.80 latency=0 link=no multicast=yes port=twisted pair  
resources: irq:44 memory:f7c10000-f7c1ffff memory:f7c00000-f7c0ffff  


Output of:  
rfkill list all:  
0: hci0: Bluetooth  
Soft blocked: no  
Hard blocked: no  

Output of:  
ifconfig  
eth0  
Link encap:Ethernet HWaddr b8:ca:3a:c4:3f:dd  
UP BROADCAST MULTICAST MTU:1500 Metric:1  
RX packets:0 errors:0 dropped:0 overruns:0 frame:0  
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)  
Interrupt:18  
lo  
Link encap:Local Loopback  
inet addr:127.0.0.1 Mask:255.0.0.0  
inet6 addr: ::1/128 Scope:Host  
UP LOOPBACK RUNNING MTU:16436 Metric:1  
RX packets:6446 errors:0 dropped:0 overruns:0 frame:0  
TX packets:6446 errors:0 dropped:0 overruns:0 carrier:0  
collisions:0 txqueuelen:1000  
RX bytes:3821480 (3.8 MB) TX bytes:3821480 (3.8 MB)  

Output for:  
lspci -nn | grep 0280  
02:00.0 Network controller [0280]: Broadcom Corporation BCM43228 802.11a/b/g/n   [14e4:4359]  

output for  
cat /etc/network/interfaces  
auto lo  
iface lo inet loopback  

Como resolvo esse problema?

    

Answer 1

Por favor, obtenha uma conexão ethernet com fio temporária e abra um terminal e faça:

sudo apt-get install bcmwl-kernel-source
sudo modprobe wl

Desconecte a ethernet e seu wireless deve estar funcionando.