Ubuntu

Odd network problems in 9.04 - 64 bit

Asked by LEGOManiac

Here's what happens when I boot up my 64-bit Ubuntu 9.04 PC:

- The network icon in the notification area shows empty bars and an X in a red square. I believe it the symbol for no network connections.

- Right clicking on it shows Networking is enabled (disabling it and re-enabling it changes nothing)
- Clicking on Connection Information displays a message "No active network connections found!"
- Edit Connections shows a single wired connection which is configured properly and selected to connect automatically.
- Left clicking on the network notification icon shows that Wired Network is greyed out and "device not managed"

- From a command window, ifconfig shows the network set up as per the setting in Edit Connections listed above.
- I can PING my router
- PINGing outside my router I get Network is unreachable.
- I am not using a proxy for any protocols
- nslookup answers.launchpad.net returns ip 91.189.90.244
- pinging 91.189.90.244 says network is unreachable
- sudo service networking restart gets this far and hangs:
 * Reconfiguring network interfaces... [ OK ]
user@PentiumD64:~$ * Stopping NTP server ntpd
   ...done.
 * Starting NTP server ntpd
   ...done.

Yet, connecting to answers.launchpad.net works. I'm typing this on that same PC.

Does anyone have any clue as to what's going on and how to fix it?

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Solved by:
zvacet
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Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#1

what is the output of:

route

Thanks

Revision history for this message
Best zvacet (ivicakolic) said : 		#2

First copy your interfaces file in etc/nework with this command

sudo cp /etc/network/interfaces /home/Desktop

After that edit that file in /etc/network/ with

gksudo gedit /etc/network/interfaces

Delete all text in that file.Save and close file.Now you should be able to create your network connection with network applet.

Revision history for this message
LEGOManiac (bzflaglegomaniac) said : 		#3

I had copied the results of the route command but forgot to save the message after pasting it here.

It turns out it was missing the 'default' route.

I then followed zvacet's advice. It didn't work immediately but required a reboot.

That having been done, everything now works properly.

Revision history for this message
LEGOManiac (bzflaglegomaniac) said : 		#4

Thanks zvacet, that solved my question.