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I installed 14.04 to my Dell D520. I cannot connect to either ethernet or wifi. The icon in the upper right corner does not show any network devices. HOw do I fix this?

user273664
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  • Please do what is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. http://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-can-i-do – Wild Man Apr 25 '14 at 00:39
  • Please show us the output of the following command in the terminal: sudo ifconfig -a At least we'll know whether the cards are detected or not. – Louis Apr 24 '14 at 15:15
  • Here is what I got:

    lo Link encap:Local Loopback inet addr:127.0.01 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:32 errors:0 dropped:0 overruns:0 frame:0 Tx packets:32 errors:0 dropped:0 overruns:0 carrier:0 colisions:0 txqueuelen:0 RX bytes:2528 (2.5 KB) TX bytes:2528 (2.5 KB)

     – user273664 Apr 24 '14 at 15:43
  • Basically it says no NIC was detected. The problem is with the drivers not with some sort of configuration. You may wish to take a look at hardware compatibility list to make sure it is supposed to work so you spare a few hours trying the impossible. You may wish to buy another Network card for that computer instead of using the one onboard... – Louis Apr 24 '14 at 15:59

1 Answers1

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try this , it will solve your eth0 problem:

echo on | sudo tee /sys/class/net/eth0/device/power/control

and for wifi if you are shown b43 firmware not installed on start on your Ubuntu try this : 

sudo apt-get install firmware-b43-installer

and if any other firmware is missing try opening that site

Lucio
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Dhruv Narang
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