我正在使用有线互联网运行 Ubuntu 14.04，我的无线网络被检测到并连接，但我无法连接到互联网。我知道问题出在我的计算机上，因为其他计算机可以正常连接到同一路由器。我也可以通过以太网正常连接。
以下是一些值得注意的测试：
ping 192.168.0.105在数据包丢失率为 0％ 的情况下可以工作，但ping 192.168.0.1数据包丢失率为 100％。
当我插入以太网时，ping 192.168.0.1数据包丢失率为 0%。
我的无线名称是tg，路由器 IP 是192.168.0.1（我可以在此处输入用户名和密码）。我怀疑我需要将无线地址从 更改为192.168.0.105。192.168.0.1关于如何继续，有什么建议吗？
额外信息：
[lucas@lucas-ThinkPad-W520]/home/lucas$ iwconfig
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:"tg"
Mode:Managed Frequency:2.462 GHz Access Point: 00:02:6F:83:F8:F4
Bit Rate=1 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=62/70 Signal level=-48 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:52 Invalid misc:166 Missed beacon:0
[lucas@lucas-ThinkPad-W520]/home/lucas$ ifconfig
eth0 Link encap:Ethernet HWaddr f0:de:f1:b2:53:53
inet addr:192.168.0.100 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::f2de:f1ff:feb2:5353/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:980003 errors:0 dropped:0 overruns:0 frame:0
TX packets:498384 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1320506168 (1.3 GB) TX bytes:59780591 (59.7 MB)
Interrupt:20 Memory:f3a00000-f3a20000
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:21927 errors:0 dropped:0 overruns:0 frame:0
TX packets:21927 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1781719 (1.7 MB) TX bytes:1781719 (1.7 MB)
wlan0 Link encap:Ethernet HWaddr 24:77:03:29:8f:dc
inet addr:192.168.0.105 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::2677:3ff:fe29:8fdc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11828 errors:0 dropped:0 overruns:0 frame:0
TX packets:15444 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4855662 (4.8 MB) TX bytes:2250585 (2.2 MB)
[lucas@lucas-ThinkPad-W520]/home/lucas$ lspci -nn | grep 0280
03:00.0 Network controller [0280]: Intel Corporation Centrino Ultimate-N 6300 [8086:4238]
(rev 3e)
[lucas@lucas-ThinkPad-W520]/home/lucas$ rfkill list
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
拔下以太网：
[lucas@lucas-ThinkPad-W520]/home/lucas$ route -n | grep UG
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 wlan0
插入以太网：
[lucas@lucas-ThinkPad-W520]/home/lucas$ route -n | grep UG
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
[lucas@lucas-ThinkPad-W520]/home/lucas$ nm-tool
NetworkManager Tool
State: connected (global)
- Device: wlan0 [tg] ----------------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: connected
Default: no
HW Address: 24:77:03:29:8F:DC
Capabilities:
Speed: 52 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
tatum: Infra, 40:8B:07:D8:A5:04, Freq 2437 MHz, Rate 54 Mb/s, Strength
42 W
PA WPA2
ums: Infra, 00:20:A6:72:52:BF, Freq 2437 MHz, Rate 54 Mb/s, Strength 59
Alpha 40: Infra, 28:CF:E9:86:59:5D, Freq 5260 MHz, Rate 54 Mb/s, Strength 30 W
PA WPA2
thepromiselan: Infra, 58:6D:8F:51:E5:54, Freq 2452 MHz, Rate 54 Mb/s, Strength 34 $
PA WPA2
xfinitywifi: Infra, 06:1D:D5:84:27:A0, Freq 2437 MHz, Rate 54 Mb/s, Strength 52
*tg: Infra, 00:02:6F:83:F8:F4, Freq 2462 MHz, Rate 54 Mb/s, Strength 73 W
PA2
ums: Infra, 00:20:A6:A1:9F:25, Freq 2452 MHz, Rate 54 Mb/s, Strength 44
BRIAN-PC_Network:Infra, 20:AA:4B:DD:93:D6, Freq 2462 MHz, Rate 54 Mb/s, Strength 35 W
PA2
HOME-C0F8: Infra, 44:32:C8:D2:C0:F8, Freq 2412 MHz, Rate 54 Mb/s, Strength 40 W
PA WPA2
abcsexy: Infra, 28:28:5D:27:5D:85, Freq 2412 MHz, Rate 54 Mb/s, Strength 27 W
PA WPA2
IPv4 Settings:
Address: 192.168.0.105
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.1
DNS: 192.168.0.1
- Device: eth0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: e1000e
State: connected
Default: yes
HW Address: F0:DE:F1:B2:53:53
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.0.100
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.1
DNS: 192.168.0.1
答案1
安装以太网接口
sudo ifconfig eth0 up
获取 IP。使用以下任何一种方法（只要有效）
sudo dhclient eth0
sudo dhclient3 eth0
sudo dhcpcd eth0