我刚刚安装了 Ubuntu 11.10，并且我有 Broadcom BC4313 无线芯片组。我无法让它工作...我尝试了几乎所有能在网上找到的指南...
http://ubuntuforums.org/showthread.php?t=1617380 这个看起来很有希望，但是我没有 brcm80211 文件夹，在那里找到了解决方法，使用 ~/linux-next-a694cb1，但是当我尝试创建文件时，出现错误..
几个月前，我遇到了同样的问题，我设法让它工作了。如果您需要更多信息，或者发布一些输出或其他内容，请告诉我。任何帮助都将不胜感激。Carmel 编辑：lspci -v 输出：
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
Subsystem: Lenovo Device 3975
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
Kernel driver in use: agpgart-intel
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 3975
Flags: bus master, fast devsel, latency 0, IRQ 42
Memory at d0000000 (64-bit, non-prefetchable) [size=4M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
Subsystem: Lenovo Device 3975
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at d0605000 (64-bit, non-prefetchable) [size=16]
Capabilities: [50] Power Management version 3
Capabilities: [8c] MSI: Enable- Count=1/1 Maskable- 64bit+
Kernel driver in use: mei
Kernel modules: mei
00:1a.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
Subsystem: Lenovo Device 3975
Flags: bus master, medium devsel, latency 0, IRQ 16
Memory at d060a000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci_hcd
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
Subsystem: Lenovo Device 3975
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at d0600000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo Device 3975
Capabilities: [a0] Power Management version 2
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Memory behind bridge: d0500000-d05fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo Device 3975
Capabilities: [a0] Power Management version 2
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 00002000-00002fff
Prefetchable memory behind bridge: 00000000d0400000-00000000d04fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo Device 3975
Capabilities: [a0] Power Management version 2
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
Subsystem: Lenovo Device 3975
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at d0609000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci_hcd
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05)
Subsystem: Lenovo Device 3975
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
Kernel modules: iTCO_wdt
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
Subsystem: Lenovo Device 3975
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 41
I/O ports at 3088 [size=8]
I/O ports at 3094 [size=4]
I/O ports at 3080 [size=8]
I/O ports at 3090 [size=4]
I/O ports at 3060 [size=32]
Memory at d0608000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Power Management version 3
Capabilities: [a8] SATA HBA v1.0
Capabilities: [b0] PCI Advanced Features
Kernel driver in use: ahci
Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
Subsystem: Lenovo Device 3975
Flags: medium devsel, IRQ 10
Memory at d0604000 (64-bit, non-prefetchable) [size=256]
I/O ports at efa0 [size=32]
Kernel modules: i2c-i801
02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
Subsystem: Broadcom Corporation Device 051b
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at d0500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [58] Vendor Specific Information: Len=78 <?>
Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
Capabilities: [160] Device Serial Number 00-00-da-ff-ff-2b-c0-f8
Capabilities: [16c] Power Budgeting <?>
Kernel modules: bcma, brcmsmac
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
Subsystem: Lenovo Device 3975
Flags: bus master, fast devsel, latency 0, IRQ 40
I/O ports at 2000 [size=256]
Memory at d0404000 (64-bit, prefetchable) [size=4K]
Memory at d0400000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
Capabilities: [d0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 13-00-00-00-68-4c-e0-00
Kernel driver in use: r8169
Kernel modules: r8169
答案1
Ubuntu 为您的 Broadcom 无线网卡使用的默认驱动程序不起作用。要使网卡重新工作，请尝试以下操作：
1) 单击“设置”>“附加驱动程序”，然后删除 WiFi 卡的驱动程序（如果有）。
2）按Ctrl+ Alt+T调出终端
3）然后输入以下内容：
$ sudo apt-get update
$ sudo apt-get install firmware-b43-installer
$ sudo reboot
4） 重新启动计算机并登录后，您的 WiFi 应该可以再次工作。