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My desktop is an old DELL that originally ran on Windows XP. Ubuntu 12.04 makes it run like brand new. After a bunch of updates the wired connections stopped working.

Network Connections reads; 

Wired Connection 1    Last Used 8 days ago..  
ifupdown (etho)                  never

Output of nm-tool is as follows:

nm-tool.
Network Manager Tool
Device: eth0   [ifupdown (eth0) 
Type: wired
Driver: r8169 
State: connecting (getting IP configuration)
Default: no
HW Address: 6C:FD:B9:3B:BD:4D
Capabilities:
  Carrier Detect:
   Speed: 100 Mb
Wired Properties:
  Carrier: on

I don't know what update caused this connection to stop working.

Hashken
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user250498
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  • Seems like is a dhcp problem ( State: connecting (getting IP configuration) ). You may check what packages were updated at the files in /var/log/apt directory. – bolichep Mar 10 '15 at 22:22

1 Answers1

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Use these 2 commands.It worked for me. 

sudo lshw -c network -sanitize​​
sudo modprobe r8169

Else refer these links.

ethernet-not-connecting-on-boot

no-wired-ethernet-connection

Ethernet -not-connecting

Community
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adarsh hota
  • 101