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如何解决笔记本电脑无法检测到无线网络的问题？

tag-icon • tag-icon 11.04 wireless dell broadcom
如何解决笔记本电脑无法检测到无线网络的问题？

可能重复：
如何安装 BCM4312 无线驱动程序？

我最近在 Dell™ Inspiron E1505 笔记本电脑上安装了 Ubuntu 11.04 以与 Windows XP 进行双启动。不幸的是，我只能在 Windows 中连接到我们的无线网络。在 Ubuntu 中，除非我将其物理连接到我们的电缆调制解调器，否则我无法上网。

我还是新手，以下是我在网上搜索到的信息。这是我的硬件：

kalayaan001@Kalayaan-MM061:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03)
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01)
00:1c.3 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 4 (rev 01)
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 01)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility X1400
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19)
03:01.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 0a)
03:01.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 05)
0b:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)

我还检查了网络管理器的状态：

kalayaan001@Kalayaan-MM061:~$ nm-applet
An instance of nm-applet is already running.

** (nm-applet:1727): WARNING **: <WARN>  constructor(): Couldn't initialize the D-Bus manager.

我们如何初始化 D-Bus 管理器？

kalayaan001@Kalayaan-MM061:~$ nm-tool

NetworkManager Tool

State: disconnected

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            b44
  State:             unavailable
  Default:           no
  HW Address:        00:19:B9:85:01:CA

  Capabilities:
    Carrier Detect:  yes
    Speed:           10 Mb/s

  Wired Properties
    Carrier:         off

好像它只能检测到有线网络的设备。如何让它识别无线设备？

然后我检查了块，但没有找到。

kalayaan001@Kalayaan-MM061:~$ rfkill list
0: dell-wifi: Wireless LAN
    Soft blocked: no
    Hard blocked: no

因此，我认为这是一个驱动程序问题，果然，我在“附加驱动程序”中发现缺少 Broadcom® STA 无线驱动程序。不幸的是，获取驱动程序也无法解决问题。它仍然无法检测到任何东西。

如何修复？

”ר_ 请帮忙！_ΓL

感谢您的时间。

保重，Kalayaan 001

回复 sagarchalise：

我安装了关键字“bcm4311”下的所有 4 个条目：firmware-b43-installer、bcmwl-kernel-source、broadcom-sta-common 和 broadcom-sta-source。（甚至还有 b43-fwcutter，尽管它出现在更广泛的关键字“bcm”中。）问题仍然存在。

附加驱动程序报告：“此驱动程序已激活并且当前正在使用中。”

这是 ifconfig：

kalayaan001@Kalayaan-MM061:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:19:b9:85:01:ca  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:17 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:12 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:720 (720.0 B)  TX bytes:720 (720.0 B)

这是 iwconfig：

kalayaan001@Kalayaan-MM061:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

我如何获得这些扩展？

在此过程中，2段代码的结果似乎发生了变化：

1）nm工具

kalayaan001@Kalayaan-MM061:~$ nm-tool

NetworkManager Tool

“工具”之后的所有内容都消失了。

2） sudo lshw -C network 之前：

kalayaan001@Kalayaan-MM061:~$ sudo lshw -C network
[sudo] password for kalayaan001: 
  *-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:efcfc000-efcfffff
  *-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: 00:19:b9:85:01:ca
       size: 10Mbit/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=half latency=64 link=no multicast=yes port=twisted pair speed=10Mbit/s
       resources: irq:17 memory:ef9fe000-ef9fffff

后：

kalayaan001@Kalayaan-MM061:~$ sudo lshw -C network
[sudo] password for kalayaan001: 
  *-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:efcfc000-efcfffff
  *-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: 00:19:b9:85:01:ca
       size: 10Mbit/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=half latency=64 link=no multicast=yes port=twisted pair speed=10Mbit/s
       resources: irq:17 memory:ef9fe000-ef9fffff

后：

kalayaan001@Kalayaan-MM061:~$ sudo lshw -C network
[sudo] password for kalayaan001:
  *-network UNCLAIMED
       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: latency=0
       resources: memory:efcfc000-efcfffff
   *-network UNCLAIMED
       description: Ethernet controller
       product: BCM4401-B0 100Base-TX
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 02
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=64
       resources: memory:ef9fe000-ef9fffff

在 Ubuntu 代码中，“UNCLAIMED”是什么意思？

我尝试了网站上建议的代码。不幸的是，没有效果。我会在早上再试一次（在我的时区已经过了睡觉时间。所以我正要睡觉。）

还有其他建议吗？

再次感谢您的时间。非常感谢您的回复。

小心，

卡拉延001

答案1

基本上检查附加驱动程序部分是否正在使用。

在此处输入图片描述

尝试ifconfig或iwconfig查看您是否有无线接口。有时，如果附加驱动程序推荐失败，您可能需要安装替代的 Broadcom 驱动程序。尝试Synaptic Package Manager使用搜索关键字的不同 Broadcom 选项bcm4311。或者按照更多说明操作这里。

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