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使用 DELL VOSTRO 的 Ubuntu 13.10 有线连接问题

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使用 DELL VOSTRO 的 Ubuntu 13.10 有线连接问题

我在使用 Ubuntu 13.10 有线连接时遇到问题。问题突然出现。不过，我能够使用以下帖子中给出的答案解决它：

Ubuntu 12.04 Dell 6400 没有网络

它运行得很好。但现在我又无法连接到互联网了。我尝试使用相同的解决方案，但毫无用处。我使用本文给出的答案重新安装了 Realtek 以太网控制器驱动程序（r8168 ==最新版本）：

升级至 12.04 后出现 Wifi 和以太网连接问题

但这些解决方案并不能解决我的问题。

---------------------------------------------------------------
sudo ifconfig :
eth0      Link encap:Ethernet  HWaddr b8:ac:6f:76:c1:2c  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:985 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1351 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:95359 (95.3 KB)  TX bytes:149074 (149.0 KB)
          Interrupt:46 Base address:0xa000 

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:1032 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1032 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:89902 (89.9 KB)  TX bytes:89902 (89.9 KB)

wlan0     Link encap:Ethernet  HWaddr 20:7c:8f:10:08:d0  
          inet addr:192.168.43.74  Bcast:192.168.43.255  Mask:255.255.255.0
          inet6 addr: fe80::227c:8fff:fe10:8d0/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:15527 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16374 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:10844956 (10.8 MB)  TX bytes:2728215 (2.7 MB)

=====================================================================
lsmod |grep r8168
r8168                 387138  0

============================================================================

 dmesg |tail

[ 3140.976810] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

[ 3156.224464] cfg80211: Calling CRDA to update world regulatory domain

[ 3156.233144] cfg80211: World regulatory domain updated:

[ 3156.233152] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)


[ 3156.233156] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

[ 3156.233161] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

[ 3156.233164] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)

[ 3156.233168] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

[ 3156.233172] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

[ 3171.265877] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

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