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Yesterday I upgraded to Ubuntu 13.04 from 12.10 on my DELL latitude D520 laptop, but then my cable internet stopped working. Its working with live CD but when installed, it doesn't work.

simarjit@simar-lapi:~$ ifconfig
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:7001 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7001 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:573938 (573.9 KB)  TX bytes:573938 (573.9 KB)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:115.241.157.174  P-t-P:220.224.141.129  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:1121 errors:24 dropped:0 overruns:0 frame:0
          TX packets:1146 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:969495 (969.4 KB)  TX bytes:111813 (111.8 KB)
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Arent you able to browse the internet? –  thefourtheye May 5 '13 at 7:07
    
Yes, I am connected through my Reliance Data card. –  user155716 May 5 '13 at 7:10
    
But, I want to connect through wired connection. –  user155716 May 5 '13 at 7:10
    
The above output of ifconfig was captured when your lan cable was connected? –  thefourtheye May 5 '13 at 7:12
    
Following is the output with Lan connected –  user155716 May 5 '13 at 7:16

1 Answer 1

I had the same problem. I have Toshiba Portege. Surprisingly in my case I found that it starts working when the power chord is connected. After getting the connection I can remove the power chord. But after rebooting same has to done.

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