Ubuntu
yelp package

wireless internet problems

Asked by Mathew John

I am able to connect to a wireless network using network manager. But when i look at connection information there is no information that is displayed. The network that I am connecting to is a dhcp enabled wireless network with wpa security.

I ran iwconfig and this is what I get.

lo no wireless extensions.

eth0 no wireless extensions.

eth1 unassociated ESSID:""
          Mode:Managed Frequency=2.417 GHz Access Point: 00:1C:10:09:3F:C3
          Bit Rate:0 kb/s Tx-Power=20 dBm Sensitivity=8/0
          Retry limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality:0 Signal level:0 Noise level:0
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

This looks like there is a problem but im not sure what to do next?

Please help

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Theodotos Andreou (theodotos) said : 		#1

Can you be more specific? What exactly is not displayed?

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Mathew John (matheujohn) said : 		#2

Connection information is as follows

Interface: 802.11 wifi (eth1)
Speed: 54 mbps
driver: ipw2200

IP Address: 0.0.0
Broadcast Add: 0.0.0
Subnet mask: 0.0.0
Default Route: 0.0.0
Primary DNS: 0.0.0
Secondary DNS: 0.0.0

Hardware Address: 00.16.6f.87.8c.a5

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Bhavani Shankar (bhavi) said : 		#3

Hello

Its a known bug..
Network Manager In Feisty (7.04) was buggy with WPA encrypted networks, and dropped and reconnected every few mintues (particularly with Intel and Atheros chipsets). Apparently it was still buggy in Gutsy (although I have stuck with it and had no problems) No problems with 8.04 also

If this is a problem - try Wicd instead of NM: http://wicd.sourceforge.net/

More Info:

https://help.ubuntu.com/community/WICD

https://answers.edge.launchpad.net/ubuntu/+source/network-manager/+question/21736

A Long discussion I had on the same issue

Regards

Bhavani Shankar.

Revision history for this message
Mathew John (matheujohn) said : 		#4

I dont think this is what I was looking for. Its not that the connection is buggy. There is no connection at all to the internet.

The network settings tool (system->admin->network) shows that I am connected to a network but I am not assigned any ip on this network and so I cannot connect to the internet.

Ive tried the information on the following urls

1. http://ubuntuforums.org/showthread.php?t=263136
2. https://help.ubuntu.com/community/WifiDocs/WirelessTroubleShootingGuide?highlight=(WifiDocs)|(AND)|(ManufacturerModel)

But as a newbie im not sure if i am doing the right thing.

I really need some help.

Revision history for this message
Theodotos Andreou (theodotos) said : 		#5

Try "sudo dhclient eth1" on Terminal and see if you get any an IP from the dhcp server. If you now the IP of the dhcp server you can also try "sudo arping -I eth1 <ip-address>" and see if you get any reply.

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