我正在尝试使用以太网电缆将 Ubuntu 14.04 连接到互联网。我已关闭无线功能。电缆可在我现在使用的 Windows 笔记本电脑上使用。当我插入电缆时，会出现“有线连接 1”，但屏幕右上角的符号继续显示，好像它正在尝试建立连接。有时它会显示“无线断开连接”。我的问题可能类似于论坛帖子但它没有很好地描述如何以图形方式设置连接。我在下面列出了常见的命令
anthony@anthony-VPCZ12V9E:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:24:be:d6:84:53
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:306 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:964 (964.0 B) TX bytes:60085 (60.0 KB)
Interrupt:18 Memory:d7800000-d7820000
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:4500 errors:0 dropped:0 overruns:0 frame:0
TX packets:4500 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:340508 (340.5 KB) TX bytes:340508 (340.5 KB)
anthony@anthony-VPCZ12V9E:~$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
anthony@anthony-VPCZ12V9E:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
anthony@anthony-VPCZ12V9E:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:24:be:d6:84:53
inet6 addr: fe80::224:beff:fed6:8453/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7 errors:0 dropped:0 overruns:0 frame:0
TX packets:452 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1028 (1.0 KB) TX bytes:88628 (88.6 KB)
Interrupt:18 Memory:d7800000-d7820000
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:7206 errors:0 dropped:0 overruns:0 frame:0
TX packets:7206 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:545840 (545.8 KB) TX bytes:545840 (545.8 KB)
anthony@anthony-VPCZ12V9E:~$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
anthony@anthony-VPCZ12V9E:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
为了澄清起见，我的代码粘贴中的波浪号两侧都没有插入电缆（波浪号上方），而下方则有电缆。
下面是我所看到的图形的截图
以下信息也可能有帮助。
anthony@anthony-VPCZ12V9E:~$ uname -a
Linux anthony-VPCZ12V9E 3.13.0-48-generic #80-Ubuntu SMP Thu Mar 12 11:16:18 UTC 2015 i686 i686 i686 GNU/Linux
anthony@anthony-VPCZ12V9E:~$ lspci -nnk | grep -iA2 net
00:19.0 Ethernet controller [0200]: Intel Corporation 82577LC Gigabit Network Connection [8086:10eb] (rev 05)
Subsystem: Sony Corporation Device [104d:905a]
Kernel driver in use: e1000e
--
02:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6200 [8086:422c] (rev 35)
Subsystem: Intel Corporation Centrino Advanced-N 6200 2x2 AGN [8086:1301]
Kernel driver in use: iwlwifi
anthony@anthony-VPCZ12V9E:~$ lsmod
Module Size Used by
btusb 27580 0
qcserial 17059 0
usb_wwan 19733 1 qcserial
usbserial 38902 2 qcserial,usb_wwan
nls_iso8859_1 12617 0
usb_storage 48417 0
bbswitch 13615 0
snd_hda_codec_hdmi 45440 4
rfcomm 53664 0
bnep 18895 2
bluetooth 342208 11 bnep,btusb,rfcomm
snd_hda_codec_realtek 59259 1
arc4 12536 2
iwldvm 214950 0
mac80211 546067 1 iwldvm
mxm_wmi 12893 0
uvcvideo 71309 0
videobuf2_vmalloc 13048 1 uvcvideo
videobuf2_memops 13170 1 videobuf2_vmalloc
intel_powerclamp 14239 0
videobuf2_core 39258 1 uvcvideo
coretemp 13195 0
videodev 108503 2 uvcvideo,videobuf2_core
kvm 388310 0
snd_hda_intel 42794 5
crc32_pclmul 12967 0
snd_hda_codec 164067 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
aesni_intel 18156 0
aes_i586 16995 1 aesni_intel
snd_hwdep 13272 1 snd_hda_codec
xts 12749 1 aesni_intel
lrw 13057 1 aesni_intel
snd_pcm 85501 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
gf128mul 14503 2 lrw,xts
ablk_helper 13357 1 aesni_intel
cryptd 15578 1 ablk_helper
snd_page_alloc 14230 2 snd_pcm,snd_hda_intel
snd_seq_midi 13132 0
snd_seq_midi_event 14475 1 snd_seq_midi
joydev 17101 0
snd_rawmidi 25135 1 snd_seq_midi
serio_raw 13230 0
intel_ips 18217 0
snd_seq 55383 2 snd_seq_midi_event,snd_seq_midi
iwlwifi 152049 1 iwldvm
lpc_ich 16864 0
snd_seq_device 14137 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 28584 2 snd_pcm,snd_seq
cfg80211 409394 3 iwlwifi,mac80211,iwldvm
i915 710013 2
nvidia 9704610 47
snd 60939 21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
mac_hid 13037 0
mei_me 18195 0
sony_laptop 44359 0
drm_kms_helper 48868 1 i915
mei 66737 1 mei_me
soundcore 12600 1 snd
drm 244037 5 i915,drm_kms_helper,nvidia
video 18903 1 i915
wmi 18673 1 mxm_wmi
shpchp 32128 0
i2c_algo_bit 13197 1 i915
parport_pc 31981 0
ppdev 17391 0
tpm_infineon 17164 0
lp 13299 0
parport 40836 3 lp,ppdev,parport_pc
e1000e 223034 0
sdhci_pci 18535 0
ptp 18445 1 e1000e
ahci 25579 2
sdhci 37779 1 sdhci_pci
libahci 27214 1 ahci
psmouse 91357 0
pps_core 18799 1 ptp
anthony@anthony-VPCZ12V9E:~$ cat /etc/r
rc0.d/ rc3.d/ rc6.d/ resolvconf/ rpc
rc1.d/ rc4.d/ rc.local resolv.conf rsyslog.conf
rc2.d/ rc5.d/ rcS.d/ rmt rsyslog.d/
anthony@anthony-VPCZ12V9E:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
anthony@anthony-VPCZ12V9E:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
答案1
以下命令解决了该问题
echo -e "nameserver 8.8.8.8\nnameserver 8.8.4.4" | sudo tee /etc/resolv.conf
然后使用以下命令重新启动网络管理器
sudo service network-manager restart
然后我重新启动了计算机以使其正常工作。