BCM4311 - Nenhuma opção para ativar o Wi-Fi [duplicado]

Question

Eu tenho o Ubuntu 16.04. Não consigo ver nenhuma opção de habilitação wifi. Selecionei o driver da Broadcom em software e atualização e a chave Wi-Fi está ativada na BIOS.

Examinei as páginas de ajuda e executei o seguinte:

$ sudo lshw -C network
  *-network               
       description: Network controller
       product: BCM4311 802.11b/g WLAN
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0b:00.0
       version: 01
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=b43-pci-bridge latency=0
       resources: irq:16 memory:efdfc000-efdfffff
  *-network
       description: Ethernet interface
       product: BCM4401-B0 100Base-TX
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 02
       serial: 00:1d:09:b6:10:83
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=b44 driverversion=2.0 duplex=full ip=192.168.1.135 latency=64 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:17 memory:ef9fe000-ef9fffff*

O que devo fazer?

$ lspci -knn | grep Net -A3; rfkill list
0b:00.0 Network controller [0280]: Broadcom Limited BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)
    Subsystem: Dell Wireless 1390 WLAN Mini-Card [1028:0007]
    Kernel driver in use: b43-pci-bridge
    Kernel modules: ssb, wl

    

Answer 1

Conecte-se à internet por fio e execute

sudo apt purge bcmwl-kernel-source
sudo apt install firmware-b43-installer

e reinicie.