Não consigo me conectar a rede wireless com o Ubuntu 12.04 64 bits

[Richard Netto]

Olá,

Acabei de instalar em meu Notebook da DELL o Ubuntu 12.04 Precise Pangolin, de 64bits, e não consigo me conectar a rede wireless de minha casa.
Quando coloquei pra testar o ubuntu antes de instalar, consegui conectar normalmente, contudo quando comecei a instalação ele pediu para conectar a uma rede
e não voltou mais a conectar na mesma que estava normal. Então instalei sem a rede mesmo.
Obrigado desde já.

[Arthur Bernardes]

Poste os resultados dos seguintes comandos..

sudo lshw -C network
ifconfig -a
iwconfig
nm-tool
rfkill list wifi

[zekkerj]

Dell, é?...

Talvez você precise bloquear o módulo "dell-laptop". Mas vamos ver como fica o resto da avaliação.

[Richard Netto]

Desculpem a demora para responder, aqui estão as respostas dos comandos:
ifconfig -a :
eth0      Link encap:Ethernet  HWaddr f0:4d:a2:d4:b8:14 
          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)

eth2      Link encap:Ethernet  HWaddr 1c:65:9d:fd:49:d0 
          inet6 addr: fe80::1e65:9dff:fefd:49d0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9 errors:0 dropped:0 overruns:0 frame:356
          TX packets:119 errors:42 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1241 (1.2 KB)  TX bytes:27388 (27.3 KB)
          Interrupt:17

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:48 errors:0 dropped:0 overruns:0 frame:0
          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3936 (3.9 KB)  TX bytes:3936 (3.9 KB)

iwconfig :
eth0      no wireless extensions.

eth2      IEEE 802.11abg  ESSID:off/any 
          Mode:Managed  Access Point: Not-Associated   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
         
lo        no wireless extensions.

nm-tool :
NetworkManager Tool

State: connecting

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        F0:4D:A2:D4:B8:14

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off


- Device: eth2  [PC_Network] ---------------------------------------------------
  Type:              802.11 WiFi
  Driver:            wl
  State:             connecting (getting IP configuration)
  Default:           no
  HW Address:        1C:65:9D:FD:49:D0

  Capabilities:

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points
    Esquilo:         Infra, 00:27:19:C8:CE:82, Freq 2437 MHz, Rate 54 Mb/s, Strength 17 WPA WPA2
    PC_Network:      Infra, C8:3A:35:2C:82:48, Freq 2412 MHz, Rate 54 Mb/s, Strength 87 WPA2

rfkill list wifi :

0: phy0: Wireless LAN
   Soft blocked: no
   Hard blocked: no
1: brcmwl-0: Wireless LAN
   Soft blocked: no
   Hard blocked: no
sudo lshw :

*-network               
       description: Wireless interface
       product: BCM4313 802.11b/g/n Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:12:00.0
       logical name: eth2
       version: 01
       serial: 1c:65:9d:fd:49:d0
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.20.155.1 (r326264) latency=0 multicast=yes wireless=IEEE 802.11abg
       resources: irq:17 memory:fb300000-fb303fff
  *-network
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:13:00.0
       logical name: eth0
       version: 03
       serial: f0:4d:a2:d4:b8:14
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168d-2.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:46 ioport:d000(size=256) memory:d2c04000-d2c04fff memory:d2c00000-d2c03fff memory:fb200000-fb21ffff

[zekkerj]

Conecte-se à internet por cabo, execute os comandos abaixo, reinicie sua máquina e teste novamente a conexão.

sudo apt-get install b43-fwcutter firmware-b43-installer bcmwl-kernel-source
sudo apt-get remove bcmwl-kernel-source

echo "b43" | sudo tee -a /etc/modules