我正在运行 Ubuntu 14.04。
我需要有人告诉我解决此问题所需采取的步骤......
这不是我的互联网问题，因为我可以在另一台笔记本电脑上上网。所以显然是我的笔记本电脑出了问题。昨天它运行良好，今天却死机了，这太不可思议了……我没有安装任何东西。
需要了解的事情
我的 MAC 地址未被阻止（联系了我的网络管理员）
我到家时有线连接可以，但在工作时却不行。在另一台笔记本电脑上测试了有线连接，可以正常使用
以太网端口没有损坏。用适配器测试一下（结果相同）
我需要采取哪些步骤来诊断这个问题？
是否配置
eth0 Link encap:Ethernet HWaddr 80:fa:5b:2b:96:84
inet6 addr: fe80::82fa:5bff:fe2b:9684/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:35 errors:0 dropped:0 overruns:0 frame:0
TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2852 (2.8 KB) TX bytes:3934 (3.9 KB)
eth1 Link encap:Ethernet HWaddr 00:e0:5c:e8:01:4a
inet6 addr: fe80::2e0:5cff:fee8:14a/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:682 errors:0 dropped:0 overruns:0 frame:0
TX packets:311 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:54625 (54.6 KB) TX bytes:61318 (61.3 KB)
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:1219 errors:0 dropped:0 overruns:0 frame:0
TX packets:1219 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:298825 (298.8 KB) TX bytes:298825 (298.8 KB)
wlan0 Link encap:Ethernet HWaddr a4:34:d9:64:d9:a8
inet addr:192.168.2.36 Bcast:192.168.3.255 Mask:255.255.252.0
inet6 addr: fe80::a634:d9ff:fe64:d9a8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:9462 errors:0 dropped:0 overruns:0 frame:0
TX packets:3966 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4224848 (4.2 MB) TX bytes:553000 (553.0 KB)
路线-n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.3.251 0.0.0.0 UG 0 0 0 wlan0
192.168.0.0 0.0.0.0 255.255.252.0 U 9 0 0 wlan0
sudo lshw -C 网络
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0.1
bus info: pci@0000:01:00.1
logical name: eth0
version: 12
serial: 80:fa:5b:2b:96:84
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical
configuration: broadcast=yes driver=r8169 latency=0 multicast=yes
resources: irq:126 ioport:e000(size=256) memory:df214000-df214fff memory:df210000-df213fff
*-network
description: Wireless interface
product: Wireless 8260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 3a
serial: a4:34:d9:64:d9:a8
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.2.0-42-generic firmware=25.30.13.0 ip=192.168.2.36 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:128 memory:df100000-df101fff
*-network
description: Ethernet interface
physical id: 1
logical name: eth1
serial: 00:e0:5c:e8:01:4a
size: 10Mbit/s
capacity: 1Gbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.08.1 (2015/07/28) duplex=half link=no multicast=yes port=MII speed=10Mbit/s
nmcli dev list iface wlan0 | grep IP4
IP4.ADDRESS[1]: ip = 192.168.2.36/22, gw = 192.168.3.251
IP4.DNS[1]: 8.8.8.8
IP4.DNS[2]: 8.8.4.4
nm 工具
- Device: eth1 -----------------------------------------------------------------
Type: Wired
Driver: r8152
State: disconnected
Default: no
HW Address: 00:E0:5C:E8:01:4A
Capabilities:
Carrier Detect: yes
Speed: 1000 Mb/s
Wired Properties
Carrier: on
- Device: wlan0 [staybridge] --------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: connected
Default: yes
HW Address: A4:34:D9:64:D9:A8
Capabilities:
Speed: 1 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
staybridge: Infra, 00:02:6F:BF:2C:60, Freq 2432 MHz, Rate 54 Mb/s, Strength 40
staybridge: Infra, 00:02:6F:B7:31:F8, Freq 2417 MHz, Rate 54 Mb/s, Strength 44
staybridge: Infra, 00:02:6F:BF:2C:70, Freq 2442 MHz, Rate 54 Mb/s, Strength 54
staybridge: Infra, 00:02:6F:B7:32:04, Freq 2447 MHz, Rate 54 Mb/s, Strength 37
*staybridge: Infra, 00:02:6F:CB:F5:60, Freq 2462 MHz, Rate 54 Mb/s, Strength 59
staybridge: Infra, 00:02:6F:CB:F5:64, Freq 2412 MHz, Rate 54 Mb/s, Strength 29
staybridge: Infra, 00:02:6F:BF:2C:84, Freq 2432 MHz, Rate 54 Mb/s, Strength 55
CableWiFi: Infra, 50:1C:BF:49:7B:23, Freq 2412 MHz, Rate 54 Mb/s, Strength 35
staybridge: Infra, 00:02:6F:E9:DB:C0, Freq 2462 MHz, Rate 54 Mb/s, Strength 70
EnGeniusBF2C78: Infra, 00:02:6F:BF:2C:78, Freq 2462 MHz, Rate 54 Mb/s, Strength 59
TWCWiFi: Infra, 50:1C:BF:49:7B:22, Freq 2412 MHz, Rate 54 Mb/s, Strength 35
IPv4 Settings:
Address: 192.168.2.36
Prefix: 22 (255.255.252.0)
Gateway: 192.168.3.251
DNS: 8.8.8.8
DNS: 8.8.4.4
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: 80:FA:5B:2B:96:84
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off