如何在Ubuntu 14.04上安装BCM4318 WiFi卡的驱动程序？

我刚刚在Acer Aspire 5100上将Ubuntu 14.04 LTS设置为与Windows XP双重引导，即使将物理开关设置为打开，我也找不到任何无线网络。我只能通过以太网端口连接到Internet。帮助会很好。

lsusb的输出：

Bus 001 Device 002: ID 13fe:3e00 Kingston Technology Company Inc. Flash Drive
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 046d:c526 Logitech, Inc. Nano Receiver
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

lspci的输出：

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS480/RS482/RS485 Host Bridge (rev 10)
00:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RC4xx/RS4xx PCI Bridge [int gfx]
00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RC4xx/RS4xx PCI Express Port 1
00:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RC4xx/RS4xx PCI Express Port 2
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 USB Host Controller (rev 80)
00:13.1 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 USB Host Controller (rev 80)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 USB2 Host Controller (rev 80)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 SMBus Controller (rev 83)
00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 IDE Controller (rev 80)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 High Definition Audio Controller (rev 01)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 PCI-ISA Bridge (rev 80)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] IXP SB4x0 PCI-PCI Bridge (rev 80)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS482M [Mobility Radeon Xpress 200]
06:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8100/8101L/8139 PCI Fast Ethernet Adapter (rev 10)
06:02.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
06:04.0 CardBus bridge: ENE Technology Inc CB-712/4 Cardbus Controller (rev 10)
06:04.1 FLASH memory: ENE Technology Inc ENE PCI Memory Stick Card Reader Controller (rev 01)
06:04.2 SD Host controller: ENE Technology Inc ENE PCI Secure Digital Card Reader Controller (rev 01)
06:04.3 FLASH memory: ENE Technology Inc FLASH memory: ENE Technology Inc: (rev 01)
06:04.4 FLASH memory: ENE Technology Inc SD/MMC Card Reader Controller (rev 01)