自从买了 Linksys E900 路由器后，Ubuntu 12.04 就无法连接了，同一台笔记本电脑（双启动）Windows 7 可以连接，同一台笔记本电脑，不同房子的 Ubuntu 可以连接。第一个路由器 Linksys E900 固件 10.0.03，第二个路由器 Linksys E1500 固件 10.0.0。无线网卡是 Broadcom，已安装驱动程序。我认为固件升级中存在一些需要在网络管理器软件中解决的问题。两个路由器的安全性都是 WPA2 Personal。请帮忙。
02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
wl 2906597 0
cfg80211 178877 1 wl
lib80211 14040 2 lib80211_crypt_tkip,wl
lo no wireless extensions.
eth1 IEEE 802.11abg ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
eth0 no wireless extensions.
我运行了命令并重新启动，但仍然没有连接，请参见下面的终端输出：
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$ sudo modprobe -r wl
[sudo] password for dmcd:
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$ sudo apt-get remove --purge bcmwl-kernel-source
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
bcmwl-kernel-source*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 3,656 kB disk space will be freed.
Do you want to continue [Y/n]? Y
(Reading database ... 170284 files and directories currently installed.)
Removing bcmwl-kernel-source ...
Removing all DKMS Modules
Done.
update-initramfs: deferring update (trigger activated)
Purging configuration files for bcmwl-kernel-source ...
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-3.2.0-49-generic
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$ sudo modprobe brcsmac
FATAL: Module brcsmac not found.
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$
编辑
现在我有一个错误的连接，请参见下面的终端输出：
nm-tool输出：
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$ nm-tool
NetworkManager Tool
State: connected (global)
- Device: wlan0 [McCisco] -----------------------------------------------------
Type: 802.11 WiFi
Driver: brcmsmac
State: connected
Default: no
HW Address: 00:26:82:99:44:D3
Capabilities:
Speed: 1 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
Thomson5A1815: Infra, 00:24:17:BC:E5:77, Freq 2462 MHz, Rate 54 Mb/s, Strength 75 WPA
McKay: Infra, 00:18:F8:3E:D5:B6, Freq 2437 MHz, Rate 54 Mb/s, Strength 45 WPA
OWNER-PC_Network:Infra, 90:F6:52:C3:11:56, Freq 2412 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
BELL586: Infra, 2C:E4:12:90:59:79, Freq 2452 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
belkinSP: Infra, 00:17:3F:5A:5E:16, Freq 2462 MHz, Rate 54 Mb/s, Strength 39 WPA
Bogdan: Infra, 50:3D:E5:30:A5:50, Freq 2437 MHz, Rate 54 Mb/s, Strength 24 WPA2
galacticempire: Infra, 28:CF:DA:B7:6E:4F, Freq 2457 MHz, Rate 54 Mb/s, Strength 30 WPA2
kalana: Infra, 00:40:F4:E3:D3:12, Freq 2412 MHz, Rate 54 Mb/s, Strength 37 WEP
cancun1: Infra, 00:26:5A:C8:E9:7D, Freq 2437 MHz, Rate 54 Mb/s, Strength 30 WEP
BELL768: Infra, 00:26:50:9E:03:91, Freq 2462 MHz, Rate 54 Mb/s, Strength 24 WEP
*McCisco: Infra, C8:D7:19:CF:3F:7A, Freq 2462 MHz, Rate 54 Mb/s, Strength 58 WPA2
Leano Wireless: Infra, 34:EF:44:97:CB:C1, Freq 2437 MHz, Rate 54 Mb/s, Strength 19 WPA
NETGEAR-3G: Infra, C4:3D:C7:6A:FA:3C, Freq 2417 MHz, Rate 54 Mb/s, Strength 17 WPA2
BELL513: Infra, 3C:EA:4F:BC:AB:31, Freq 2437 MHz, Rate 54 Mb/s, Strength 24 WEP
IPv6 Settings:
Address: fd11:cc97:526d:0:71e5:7a5d:3419:d561
Prefix: 64
Gateway: ::
Address: fd11:cc97:526d:0:226:82ff:fe99:44d3
Prefix: 64
Gateway: ::
Address: fe80::226:82ff:fe99:44d3
Prefix: 64
Gateway: ::
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: C8:0A:A9:C8:17:65
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: off
route -n输出：
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
以下是尝试连接时和连接失败后 nm-tool 命令的输出：
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$ nm-tool
NetworkManager Tool
State: connecting
- Device: wlan0 [McCisco] -----------------------------------------------------
Type: 802.11 WiFi
Driver: brcmsmac
State: connecting (getting IP configuration)
Default: no
HW Address: 00:26:82:99:44:D3
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
Thomson5A1815: Infra, 00:24:17:BC:E5:77, Freq 2462 MHz, Rate 54 Mb/s, Strength 59 WPA
McKay: Infra, 00:18:F8:3E:D5:B6, Freq 2437 MHz, Rate 54 Mb/s, Strength 42 WPA
OWNER-PC_Network:Infra, 90:F6:52:C3:11:56, Freq 2412 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
belkinSP: Infra, 00:17:3F:5A:5E:16, Freq 2462 MHz, Rate 54 Mb/s, Strength 39 WPA
BELL586: Infra, 2C:E4:12:90:59:79, Freq 2452 MHz, Rate 54 Mb/s, Strength 37 WPA WPA2
galacticempire: Infra, 28:CF:DA:B7:6E:4F, Freq 2457 MHz, Rate 54 Mb/s, Strength 30 WPA2
kalana: Infra, 00:40:F4:E3:D3:12, Freq 2412 MHz, Rate 54 Mb/s, Strength 40 WEP
cancun1: Infra, 00:26:5A:C8:E9:7D, Freq 2437 MHz, Rate 54 Mb/s, Strength 30 WEP
BELL768: Infra, 00:26:50:9E:03:91, Freq 2462 MHz, Rate 54 Mb/s, Strength 22 WEP
NETGEAR-3G: Infra, C4:3D:C7:6A:FA:3C, Freq 2417 MHz, Rate 54 Mb/s, Strength 27 WPA2
McCisco: Infra, C8:D7:19:CF:3F:7A, Freq 2462 MHz, Rate 54 Mb/s, Strength 64 WPA2
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: C8:0A:A9:C8:17:65
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: off
dmcd@dmcd-Presario-CQ62-Notebook-PC:~$ nm-tool
NetworkManager Tool
State: disconnected
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: brcmsmac
State: disconnected
Default: no
HW Address: 00:26:82:99:44:D3
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
Thomson5A1815: Infra, 00:24:17:BC:E5:77, Freq 2462 MHz, Rate 54 Mb/s, Strength 59 WPA
McKay: Infra, 00:18:F8:3E:D5:B6, Freq 2437 MHz, Rate 54 Mb/s, Strength 42 WPA
OWNER-PC_Network:Infra, 90:F6:52:C3:11:56, Freq 2412 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
belkinSP: Infra, 00:17:3F:5A:5E:16, Freq 2462 MHz, Rate 54 Mb/s, Strength 39 WPA
BELL586: Infra, 2C:E4:12:90:59:79, Freq 2452 MHz, Rate 54 Mb/s, Strength 37 WPA WPA2
galacticempire: Infra, 28:CF:DA:B7:6E:4F, Freq 2457 MHz, Rate 54 Mb/s, Strength 30 WPA2
kalana: Infra, 00:40:F4:E3:D3:12, Freq 2412 MHz, Rate 54 Mb/s, Strength 40 WEP
cancun1: Infra, 00:26:5A:C8:E9:7D, Freq 2437 MHz, Rate 54 Mb/s, Strength 30 WEP
BELL768: Infra, 00:26:50:9E:03:91, Freq 2462 MHz, Rate 54 Mb/s, Strength 24 WEP
NETGEAR-3G: Infra, C4:3D:C7:6A:FA:3C, Freq 2417 MHz, Rate 54 Mb/s, Strength 27 WPA2
McCisco: Infra, C8:D7:19:CF:3F:7A, Freq 2462 MHz, Rate 54 Mb/s, Strength 64 WPA2
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: C8:0A:A9:C8:17:65
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: off
答案1
我相信司机韦对于您的设备 14e4:4727 来说不正确。请打开终端并执行：
sudo modprobe -r wl
sudo apt-get remove --purge bcmwl-kernel-source
sudo modprobe brcmsmac
您的无线网络现在应该可以正常工作了；但是可能需要重新启动。