我最近更新了系统，现在无法通过 WiFi 或有线连接到互联网。
我想我应该澄清一下，虽然它识别了连接，但它并不连接到网络。其他所有连接都正常。
我家里的所有其他有线设备和 WiFi 都正常，并且我的网络设置没有任何变化。
PS：我的戴尔 Inspiron 电脑上确实有臭名昭著的 Broadcom 卡。
我也启动了所有以前的内核但仍然没有任何反应。
billy@BillyLaptop:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:1c:23:89:46:5f
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:47 errors:0 dropped:0 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7200 (7.2 KB) TX bytes:8654 (8.6 KB) Interrupt:21
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:65536 Metric:1
RX packets:2672 errors:0 dropped:0 overruns:0 frame:0
TX packets:2672 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:233285 (233.2 KB) TX bytes:233285 (233.2 KB)
wlan0 Link encap:Ethernet HWaddr 00:1c:26:3a:65:aa
inet addr:192.168.11.5 Bcast:192.168.11.255 Mask:255.255.255.0
inet6 addr: fe80::21c:26ff:fe3a:65aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2789 errors:0 dropped:0 overruns:0 frame:0
TX packets:180 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:365198 (365.1 KB) TX bytes:32067 (32.0 KB)
billy@BillyLaptop:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.11.1 0.0.0.0 UG 0 0 0 wlan0
192.168.11.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
billy@BillyLaptop:~$ nmcli dev list iface wlan0
GENERAL.DEVICE: wlan0
GENERAL.TYPE: 802-11-wireless
GENERAL.VENDOR: Broadcom Corporation
GENERAL.PRODUCT: Wireless 1390 WLAN Mini-Card
GENERAL.DRIVER: b43
GENERAL.DRIVER-VERSION: 3.13.0-32-generic
GENERAL.FIRMWARE-VERSION: N/A
GENERAL.HWADDR: 00:1C:26:3A:65:AA
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:05.0/0000:0b:00.0/ssb0:0/net/wlan0 GENERAL.IP-IFACE: wlan0
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.CONNECTION: /org/freedesktop/NetworkManager/ActiveConnection/2 CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: 48 Mb/s
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 58555ac2-5665-41c6-98db-633d44173cb7 | HarperBentley
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes
WIFI-PROPERTIES.AP: yes
WIFI-PROPERTIES.ADHOC: yes AP[1].SSID: 'TG862G12'
AP[1].BSSID: 14:AB:F0:31:D1:10
AP[1].MODE: Infrastructure
AP[1].FREQ: 2462 MHz
AP[1].RATE: 54 MB/s
AP[1].SIGNAL: 50
AP[1].SECURITY: WPA2
AP[1].ACTIVE: no
AP[2].SSID: '2WIRE322'
AP[2].BSSID: B8:E6:25:26:7A:51
AP[2].MODE: Infrastructure
AP[2].FREQ: 2457 MHz
AP[2].RATE: 54 MB/s
AP[2].SIGNAL: 60
AP[2].SECURITY: WPA WPA2
AP[2].ACTIVE: no
AP[3].SSID: 'HarperBentley'
AP[3].BSSID: 00:24:A5:34:98:19
AP[3].MODE: Infrastructure
AP[3].FREQ: 2412 MHz
AP[3].RATE: 54 MB/s
AP[3].SIGNAL: 78
AP[3].SECURITY: WPA WPA2
AP[3].ACTIVE: yes
IP4.ADDRESS[1]: ip = 192.168.11.5/24, gw = 192.168.11.1
IP4.DNS[1]: 192.168.11.1
IP4.DOMAIN[1]: satx.rr.com
DHCP4.OPTION[1]: domain_name = satx.rr.com
DHCP4.OPTION[2]: expiry = 1408997236
DHCP4.OPTION[3]: broadcast_address = 192.168.11.255
DHCP4.OPTION[4]: dhcp_message_type = 5
DHCP4.OPTION[5]: dhcp_lease_time = 172800
DHCP4.OPTION[6]: ip_address = 192.168.11.5
DHCP4.OPTION[7]: routers = 192.168.11.1
DHCP4.OPTION[8]: subnet_mask = 255.255.255.0
DHCP4.OPTION[9]: domain_name_servers = 192.168.11.1
DHCP4.OPTION[10]: network_number = 192.168.11.0
DHCP4.OPTION[11]: dhcp_server_identifier = 192.168.11.1
非常感谢您提供的所有帮助。
答案1
我无法发表评论（低于 50 个声望），所以我不得不在这里提问。你能发表你的ifconfig 评论route -n吗？还有以下内容：
nmcli dev list iface wlan0
假设你的界面是wlan0
编辑您能发布结果吗ping google.com -c 2？
编辑_2ok 看来您已连接，但 DNS 查找失败。假设您正在使用，dhcp您可以运行以下命令：
sudo dhclient -v -r wlan0
sudo dhclient -v wlan0
然后把输出发布到这里，看看之后是否可以访问互联网？如果这样不行，试试
sudo ifconfig wlan0 down
sudo ifconfig wlan0 up
然后尝试重新连接到您的无线上网网络