连接到有线时无法连接到检测到的无线网络
我正在使用带有windows和ubuntu 10.10的双启动电脑。 Ubuntu已经进行了全新安装，现在无线连接显示为可用，但是当我连接时，它无法连接到互联网。当我在ubuntu中使用有线连接时，我可以访问互联网并且它可以工作。无线连接运行良好当我使用Windows所以我没有看到无线路由器的问题，我的lappy与ubuntu可以连接到它。我使用有线连接只是时间，否则我使用无线。一些输出可能有用的前期参考。
lspci o/p: 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 671MX 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS AGP Port (virtual PCI-to-PCI bridge) 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS968 [MuTIOL Media IO] (rev 01) 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev 01) 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller 00:05.0 IDE interface: Silicon Integrated Systems [SiS] SATA Controller / IDE mode (rev 03) 00:06.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge 00:07.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge 00:0d.0 Communication controller: Conexant Systems, Inc. HSF 56k Data/Fax Modem 00:0f.0 Audio device: Silicon Integrated Systems [SiS] Azalia Audio Controller 00:1f.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 771/671 PCIE VGA Display Adapter (rev 10) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 01) lshw -c network o/p: *-network description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: 01 serial: 00:1d:7d:56:84:51 size: 100MB/s capacity: 100MB/s width: 64 bits clock: 33MHz capabilities: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.1.7 latency=0 link=yes multicast=yes port=MII speed=100MB/s resources: irq:43 ioport:ec00(size=256) memory:febff000-febfffff memory:febc0000-febdffff *-network description: Wireless interface physical id: 1 bus info: usb@1:4 logical name: wlan0 serial: 00:21:91:1d:f7:5c capabilities: ethernet physical wireless configuration: broadcast=yes driver=rt73usb driverversion=2.6.35-22-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11bg lsmod o/p: Module Size Used by aes_i586 7280 0 aes_generic 26875 1 aes_i586 binfmt_misc 6599 1 snd_hda_codec_analog 59649 1 arc4 1165 2 snd_hda_intel 22107 2 snd_hda_codec 87552 2 snd_hda_codec_analog,snd_hda_intel snd_hwdep 5040 1 snd_hda_codec snd_pcm 71475 2 snd_hda_intel,snd_hda_codec snd_seq_midi 4588 0 snd_rawmidi 17783 1 snd_seq_midi snd_seq_midi_event 6047 1 snd_seq_midi rt73usb 22442 0 crc_itu_t 1383 1 rt73usb rt2x00usb 9779 1 rt73usb snd_seq 47174 2 snd_seq_midi,snd_seq_midi_event rt2x00lib 27275 2 rt73usb,rt2x00usb led_class 2633 1 rt2x00lib mac80211 231541 2 rt2x00usb,rt2x00lib snd_timer 19067 2 snd_pcm,snd_seq snd_seq_device 5744 3 snd_seq_midi,snd_rawmidi,snd_seq ppdev 5556 0 parport_pc 26058 1 cfg80211 144470 2 rt2x00lib,mac80211 snd 49006 13 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 880 1 snd sis_agp 4123 1 snd_page_alloc 7120 2 snd_hda_intel,snd_pcm shpchp 29886 0 agpgart 32011 1 sis_agp lp 7342 0 parport 31492 3 ppdev,parport_pc,lp usbhid 36882 0 hid 67742 1 usbhid usb_storage 40172 0 r8169 36489 0 sata_sis 3504 3 mii 4425 1 r8169 rfkill list wifi o/p: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 编辑：
http://www.computerandyou.net/2011/10/how-to-solve-no-wireless-network-detected-in-ubuntu-11-10/以上链接工作一次，但当我重新开始时，我是无法连接到互联网。
当您连接到有线网络时：
打开终端（Ctrl + Alt + T）并键入以下命令以安装Synaptic Package Manager：
sudo apt-get install synaptic
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现在打开Synaptic Package Manager并在其中搜索bcm。 如果已经（与bcm相关）特别是bcmwl-kernel-source，请卸载或删除任何软件包
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现在安装这两个软件包：b43-fwcutter和firmware-b43-installer。
断开有线网络…重启。
资料来源： http ： //www.computerandyou.net/2011/10/how-to-solve-no-wireless-network-detected-in-ubuntu-11-10/
一旦您按照帮助您的链接（仅在我的博客上的另一个链接），然后使更改成为永久更改，请按照下列步骤操作：在终端中键入以下命令
cat /etc/modprobe.d/* | egrep '8180|acx|at76|ath|b43|bcm|CX|eth|ipw|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|p54|prism|rtl|rt2|rt3|rt6|rt7|witch|wl'
检查是否存在“黑名单bcm43xx”一词
如果是的话，然后键入cd /etc/modprobe.d/然后sudo gedit blacklist.conf 在行前放一个＃：blacklist bcm43xx然后保存文件（我收到的终端错误消息无法保存，但它确实保存得当。） 重启