突然，我的 ubuntu 13.04 系统上的互联网停止工作。首先，我尝试重新启动路由器，但没有成功。然后我尝试互联网，WIN 7它工作正常。但它在 ubuntu 上不起作用，我尝试了 LAN/Wifi，但它们都不起作用。下面我粘贴了我收集的所有信息：
iwconfig
lo no wireless extensions.
eth0 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
ifconfig
eth0 Link encap:Ethernet HWaddr 00:21:9b:f3:c7:39
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::221:9bff:fef3:c739/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1298 errors:0 dropped:0 overruns:0 frame:0
TX packets:1429 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:357699 (357.6 KB) TX bytes:150796 (150.7 KB)
Interrupt:16
eth1 Link encap:Ethernet HWaddr 00:23:4d:4d:4a:0b
inet6 addr: fe80::223:4dff:fe4d:4a0b/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:17 Base address:0xc000
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:16436 Metric:1
RX packets:1916 errors:0 dropped:0 overruns:0 frame:0
TX packets:1916 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:133301 (133.3 KB) TX bytes:133301 (133.3 KB)
ping 8.8.8.8 -c 4
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_req=1 ttl=56 time=28.1 ms
64 bytes from 8.8.8.8: icmp_req=2 ttl=56 time=27.4 ms
64 bytes from 8.8.8.8: icmp_req=3 ttl=56 time=27.9 ms
64 bytes from 8.8.8.8: icmp_req=4 ttl=56 time=36.4 ms
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 27.436/29.997/36.444/3.731 ms
ping www.google.com -c 4
ping: unknown host www.google.com
ping 192.168.1.1 -c 4
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_req=1 ttl=64 time=0.610 ms
64 bytes from 192.168.1.1: icmp_req=2 ttl=64 time=0.588 ms
64 bytes from 192.168.1.1: icmp_req=3 ttl=64 time=0.554 ms
64 bytes from 192.168.1.1: icmp_req=4 ttl=64 time=0.575 ms
--- 192.168.1.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2997ms
rtt min/avg/max/mdev = 0.554/0.581/0.610/0.035 ms
sudo apt-get update
Err http://archive.scrapy.org precise Release.gpg
Something wicked happened resolving 'archive.scrapy.org:http' (-11 - System error)
Err http://archive.canonical.com raring Release.gpg
Something wicked happened resolving 'archive.canonical.com:http' (-11 - System error)
Err http://ppa.launchpad.net raring Release.gpg
Something wicked happened resolving 'ppa.launchpad.net:http' (-11 - System error)
sudo lshw
ubuntu
description: Portable Computer
product: Inspiron 1525 ()
vendor: Dell Inc.
serial: F7VH2BS
width: 32 bits
capabilities: smbios-2.4 dmi-2.4
configuration: boot=normal chassis=portable uuid=44454C4C-3700-1056-8048-C6C04F324253
*-core
description: Motherboard
product: 0U990C
vendor: Dell Inc.
physical id: 0
serial: .F7VH2BS.CN7016689U0NZW.
*-firmware
description: BIOS
vendor: Dell Inc.
physical id: 0
version: A17
date: 10/27/2009
size: 64KiB
capacity: 1984KiB
capabilities: isa pci pcmcia pnp upgrade shadowing cdboot bootselect int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb agp smartbattery biosbootspecification netboot
*-cpu
description: CPU
product: Intel(R) Core(TM)2 Duo CPU T5800 @ 2.00GHz
vendor: Intel Corp.
physical id: 400
bus info: cpu@0
version: 6.15.13
serial: 0000-06FD-0000-0000-0000-0000
slot: Microprocessor
size: 800MHz
capacity: 2GHz
width: 64 bits
clock: 200MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm cpufreq
configuration: cores=2 enabledcores=2 id=0 threads=2
*-cache:0
description: L1 cache
physical id: 700
size: 32KiB
capacity: 32KiB
capabilities: internal write-back data
*-cache:1
description: L2 cache
physical id: 701
size: 2MiB
capacity: 2MiB
clock: 66MHz (15.0ns)
capabilities: pipeline-burst internal varies unified
*-logicalcpu:0
description: Logical CPU
physical id: 0.1
width: 64 bits
capabilities: logical
*-logicalcpu:1
description: Logical CPU
physical id: 0.2
width: 64 bits
capabilities: logical
*-memory
description: System Memory
physical id: 1000
slot: System board or motherboard
size: 2GiB
*-bank:0
description: DIMM DDR Synchronous 800 MHz (1.2 ns)
product: HYMP112S64CP6-S6
vendor: Hynix Semiconductor (Hyundai Electronics)
physical id: 0
serial: 04008132
slot: DIMM_A
size: 1GiB
width: 64 bits
clock: 800MHz (1.2ns)
*-bank:1
description: DIMM DDR Synchronous 800 MHz (1.2 ns)
product: HYMP112S64CP6-S6
vendor: Hynix Semiconductor (Hyundai Electronics)
physical id: 1
serial: 04008054
slot: DIMM_B
size: 1GiB
width: 64 bits
clock: 800MHz (1.2ns)
*-pci
description: Host bridge
product: Mobile PM965/GM965/GL960 Memory Controller Hub
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 0c
width: 32 bits
clock: 33MHz
configuration: driver=agpgart-intel
resources: irq:0
*-display:0
description: VGA compatible controller
product: Mobile GM965/GL960 Integrated Graphics Controller (primary)
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 0c
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:45 memory:fea00000-feafffff memory:e0000000-efffffff ioport:eff8(size=8)
*-display:1 UNCLAIMED
description: Display controller
product: Mobile GM965/GL960 Integrated Graphics Controller (secondary)
vendor: Intel Corporation
physical id: 2.1
bus info: pci@0000:00:02.1
version: 0c
width: 64 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=0
resources: memory:feb00000-febfffff
*-usb:0
description: USB controller
product: 82801H (ICH8 Family) USB UHCI Controller #4
vendor: Intel Corporation
physical id: 1a
bus info: pci@0000:00:1a.0
version: 02
width: 32 bits
clock: 33MHz
capabilities: uhci bus_master
configuration: driver=uhci_hcd latency=0
resources: irq:20 ioport:6f20(size=32)
*-usb:1
description: USB controller
product: 82801H (ICH8 Family) USB UHCI Controller #5
vendor: Intel Corporation
physical id: 1a.1
bus info: pci@0000:00:1a.1
version: 02
width: 32 bits
clock: 33MHz
capabilities: uhci bus_master
configuration: driver=uhci_hcd latency=0
resources: irq:21 ioport:6f00(size=32)
*-usb:2
description: USB controller
product: 82801H (ICH8 Family) USB2 EHCI Controller #2
vendor: Intel Corporation
physical id: 1a.7
bus info: pci@0000:00:1a.7
version: 02
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci_hcd latency=0
resources: irq:22 memory:fed1c400-fed1c7ff
*-multimedia
description: Audio device
product: 82801H (ICH8 Family) HD Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:46 memory:fe9fc000-fe9fffff
*-pci:0
description: PCI bridge
product: 82801H (ICH8 Family) PCI Express Port 1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: 02
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:40 ioport:d000(size=4096) memory:fe800000-fe8fffff ioport:80000000(size=2097152)
*-network
description: Ethernet interface
product: 88E8040 PCI-E Fast Ethernet Controller
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:09:00.0
logical name: eth0
version: 12
serial: 00:21:9b:f3:c7:39
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 duplex=full ip=192.168.1.2 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:44 memory:fe8fc000-fe8fffff ioport:de00(size=256)
*-pci:1
description: PCI bridge
product: 82801H (ICH8 Family) PCI Express Port 2
vendor: Intel Corporation
physical id: 1c.1
bus info: pci@0000:00:1c.1
version: 02
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:41 ioport:2000(size=4096) memory:fe700000-fe7fffff ioport:80200000(size=2097152)
*-network
description: Wireless interface
product: BCM4312 802.11b/g LP-PHY
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:0b:00.0
logical name: eth1
version: 01
serial: 00:23:4d:4d:4a:0b
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.20.155.1 (r326264) latency=0 multicast=yes wireless=IEEE 802.11abg
resources: irq:17 memory:fe7fc000-fe7fffff
*-pci:2
description: PCI bridge
product: 82801H (ICH8 Family) PCI Express Port 5
vendor: Intel Corporation
physical id: 1c.4
bus info: pci@0000:00:1c.4
version: 02
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:42 ioport:c000(size=4096) memory:fe400000-fe6fffff ioport:f0000000(size=2097152)
*-usb:3
description: USB controller
product: 82801H (ICH8 Family) USB UHCI Controller #1
vendor: Intel Corporation
physical id: 1d
bus info: pci@0000:00:1d.0
version: 02
width: 32 bits
clock: 33MHz
capabilities: uhci bus_master
configuration: driver=uhci_hcd latency=0
resources: irq:20 ioport:6f80(size=32)
*-usb:4
description: USB controller
product: 82801H (ICH8 Family) USB UHCI Controller #2
vendor: Intel Corporation
physical id: 1d.1
bus info: pci@0000:00:1d.1
version: 02
width: 32 bits
clock: 33MHz
capabilities: uhci bus_master
configuration: driver=uhci_hcd latency=0
resources: irq:21 ioport:6f60(size=32)
*-usb:5
description: USB controller
product: 82801H (ICH8 Family) USB UHCI Controller #3
vendor: Intel Corporation
physical id: 1d.2
bus info: pci@0000:00:1d.2
version: 02
width: 32 bits
clock: 33MHz
capabilities: uhci bus_master
configuration: driver=uhci_hcd latency=0
resources: irq:22 ioport:6f40(size=32)
*-usb:6
description: USB controller
product: 82801H (ICH8 Family) USB2 EHCI Controller #1
vendor: Intel Corporation
physical id: 1d.7
bus info: pci@0000:00:1d.7
version: 02
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci_hcd latency=0
resources: irq:20 memory:fed1c000-fed1c3ff
*-pci:3
description: PCI bridge
product: 82801 Mobile PCI Bridge
vendor: Intel Corporation
physical id: 1e
bus info: pci@0000:00:1e.0
version: f2
width: 32 bits
clock: 33MHz
capabilities: pci subtractive_decode bus_master cap_list
resources: memory:fe300000-fe3fffff
*-firewire
description: FireWire (IEEE 1394)
product: R5C832 IEEE 1394 Controller
vendor: Ricoh Co Ltd
physical id: 9
bus info: pci@0000:02:09.0
version: 05
width: 32 bits
clock: 33MHz
capabilities: pm ohci bus_master cap_list
configuration: driver=firewire_ohci latency=64 maxlatency=4 mingnt=2
resources: irq:16 memory:fe3ff800-fe3fffff
*-generic:0
description: SD Host controller
product: R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter
vendor: Ricoh Co Ltd
physical id: 9.1
bus info: pci@0000:02:09.1
version: 22
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=sdhci-pci latency=64
resources: irq:18 memory:fe3ff400-fe3ff4ff
*-generic:1
description: System peripheral
product: R5C592 Memory Stick Bus Host Adapter
vendor: Ricoh Co Ltd
physical id: 9.2
bus info: pci@0000:02:09.2
version: 12
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=r592 latency=64
resources: irq:18 memory:fe3ff600-fe3ff6ff
*-generic:2
description: System peripheral
product: xD-Picture Card Controller
vendor: Ricoh Co Ltd
physical id: 9.3
bus info: pci@0000:02:09.3
version: 12
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=r852 latency=64
resources: irq:18 memory:fe3ff700-fe3ff7ff
*-isa
description: ISA bridge
product: 82801HM (ICH8M) LPC Interface Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 02
width: 32 bits
clock: 33MHz
capabilities: isa bus_master cap_list
configuration: driver=lpc_ich latency=0
resources: irq:0
*-ide
description: IDE interface
product: 82801HM/HEM (ICH8M/ICH8M-E) IDE Controller
vendor: Intel Corporation
physical id: 1f.1
bus info: pci@0000:00:1f.1
version: 02
width: 32 bits
clock: 33MHz
capabilities: ide bus_master
configuration: driver=ata_piix latency=0
resources: irq:16 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:6fa0(size=16)
*-storage
description: SATA controller
product: 82801HM/HEM (ICH8M/ICH8M-E) SATA Controller [AHCI mode]
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 02
width: 32 bits
clock: 66MHz
capabilities: storage msi pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:43 ioport:6eb0(size=8) ioport:6eb8(size=4) ioport:6ec0(size=8) ioport:6ec8(size=4) ioport:6ee0(size=32) memory:fe9fb800-fe9fbfff
*-serial UNCLAIMED
description: SMBus
product: 82801H (ICH8 Family) SMBus Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 02
width: 32 bits
clock: 33MHz
configuration: latency=0
resources: memory:fe9fb700-fe9fb7ff ioport:10c0(size=32)
*-scsi:0
physical id: 1
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: WDC WD1600BEVT-7
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 11.0
serial: WD-WXE808SV0853
size: 149GiB (160GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 sectorsize=512 signature=70000000
*-volume:0
description: Windows FAT volume
vendor: Dell 8.0
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
version: FAT16
serial: 07d8-0a13
size: 117MiB
capacity: 117MiB
capabilities: primary fat initialized
configuration: FATs=2 filesystem=fat label=DellUtility
*-volume:1
description: Windows NTFS volume
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
version: 3.1
serial: 5c89718e-6480-cd49-b364-ef9b33d13654
size: 10216MiB
capacity: 10239MiB
capabilities: primary ntfs initialized
configuration: clustersize=4096 created=2013-04-03 14:01:34 filesystem=ntfs label=New Volume state=clean
*-volume:2
description: Windows NTFS volume
physical id: 3
bus info: scsi@0:0.0.0,3
logical name: /dev/sda3
version: 3.1
serial: 0c39-c2bc
size: 78MiB
capacity: 100MiB
capabilities: primary bootable ntfs initialized
configuration: clustersize=4096 created=2012-06-25 16:12:32 filesystem=ntfs label=System Reserved state=clean
*-volume:3
description: Windows NTFS volume
physical id: 4
bus info: scsi@0:0.0.0,4
logical name: /dev/sda4
logical name: /host
version: 3.1
serial: 40c0874d-f90c-a443-b48e-9cf8fe425595
size: 138GiB
capacity: 138GiB
capabilities: primary ntfs initialized
configuration: clustersize=4096 created=2012-06-25 16:12:47 filesystem=ntfs mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096 state=mounted
*-scsi:1
physical id: 2
logical name: scsi3
capabilities: emulated
*-cdrom
description: DVD-RAM writer
product: DVD+-RW GSA-T21N
vendor: HL-DT-ST
physical id: 0.0.0
bus info: scsi@3:0.0.0
logical name: /dev/cdrom
logical name: /dev/cdrw
logical name: /dev/dvd
logical name: /dev/dvdrw
logical name: /dev/sr0
version: A1R1
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=open
*-battery
product: DELL X409G8A
physical id: 1
slot: Sys. Battery Bay
capacity: 37000mWh
configuration: voltage=11.1V
有人可以帮帮我吗
答案1
我不确定它是否有效，但你可以试一试。它是安全的，所以不必担心。
按着这些次序。
首先备份
/etc/network/interfacessudo cp /etc/network/interfaces /etc/network/interfaces.back打开
/etc/network/interfaces并将sudo gedit /etc/network/interfaces内容替换为以下内容：auto eth1 iface eth1 inet dhcp保存关闭
gedit并执行以下命令：sudo ifup eth1尝试再次连接，并尝试重新启动系统一次。
如果不起作用，那么我很抱歉！这不是你的解决方案。
/etc/network/interfaces用旧文件替换新文件/etc/network/interfaces.back：：sudo mv /etc/network/interfaces.back /etc/network/interfaces
回复 发生什么事了。