Isso é bem fácil. Conecte-se à internet por fio e execute
sudo apt-get install bcmwl-kernel-source
Se você não conseguir se conectar por fio, use ESTE GUIA .
eu tenho um ideapad da Lenovo e G480 ubuntu 14.04.02. meu laptop detecta qualquer outro wi-fi, mas não o meu. Também verifiquei a conexão e ela está funcionando em todos os outros dispositivos. Alguém poderia me ajudar a resolver isso. Obrigado
heres algumas informações que podem ajudar.
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS"
Linux umar-Lenovo-G480 3.16.0-41-generic #55~14.04.1-Ubuntu SMP Sun Jun 14 18:43:36 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
umar@umar-Lenovo-G480:~$ lspci -nnk | grep -iA2 net
02:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8162 Fast Ethernet [1969:1090] (rev 08)
Subsystem: Lenovo Device [17aa:3979]
Kernel driver in use: alx
03:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:0587]
Kernel driver in use: bcma-pci-bridge
umar@umar-Lenovo-G480:~$ iwconfig
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=27 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
umar@umar-Lenovo-G480:~$ rfkill list all
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
*-network
description: Ethernet interface
product: AR8162 Fast Ethernet
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 08
serial: b8:88:e3:76:bd:2d
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=alx duplex=full ip=192.168.0.102 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:46 memory:db500000-db53ffff ioport:2000(size=128)
*-network
description: Network controller
product: BCM4313 802.11bgn Wireless Network Adapter
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:03:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=bcma-pci-bridge latency=0
resources: irq:17 memory:db400000-db403fff
*-network
description: Wireless interface
physical id: 3
logical name: wlan0
serial: 08:ed:b9:a4:43:97
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=brcmsmac driverversion=3.16.0-41-generic firmware=610.812 link=no multicast=yes wireless=IEEE 802.11bgn
lspci -knn | grep Net -A2
03:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:0587]
Kernel driver in use: wl