Ubuntu 14.04.2 lts WIFI não conecta [RESOLVIDO]

Bom dia galera , instalei o Ubuntu 14.04.2 lts recentemente em meu notebook, mas ele nao conecta wifi, só net cabeada.
Ele detecta o wifi aqui de casa, mas coloco a senha pra conectar e ele nao conecta, fica carregando mas volta a aparecer a tela pra colocar a senha e só fica nisso, nao conecta de geito nenhum :(
Alguem poderia me ajudar ???

OBS: sou novato no linux

Bom dia,

Rodrigo, meu caro, digite no terminal o comando abaixo e post aqui os resultados:

lspci -k


Att,
Jbaf_2015
Ubuntu LTS, Fedora, Mageia

00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: ivb_uncore
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (rev 09)
Kernel driver in use: pcieport
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: i915
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: xhci_hcd
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: mei_me
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
Kernel driver in use: pcieport
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: lpc_ich
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
Subsystem: Sony Corporation Device 90b7
01:00.0 3D controller: NVIDIA Corporation GK208M [GeForce GT 735M] (rev a1)
Subsystem: Sony Corporation Device 90b7
07:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
Subsystem: Foxconn International, Inc. Device e071
Kernel driver in use: wl
08:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: rtsx_pci
0e:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
Subsystem: Sony Corporation Device 90b7
Kernel driver in use: r8169

Boa tarde,

Detectada foi, até mesmo vc citou:

Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)

Bom, veja aqui este tutorial:
http://www.vivaolinux.com.br/dica/Instalando-Broadcom-BCM43-no-LinuxMint/

este:
http://www.vivaolinux.com.br/topico/WiFi/Nao-funciona-o-Wifi-no-Ubuntu-no-Windows-8-sim

Há mais na internet....

Att,
Jbaf_2015
Ubuntu LTS, Fedora, Mageia

nao deu certo cara :/

instalei o ubuntu 14.04.1 lts 32 bit e funcionou o wifi tranquilo