Ubuntu
network-manager-applet package

Ubuntu 8.04 no wired or wireless connection

Asked by fernando

Ubuntu 8.04 was connecting to the internet ( wired and wireless )ok. before. There was a little problem i wanted to eliminate and ended up not having any connection.
My other computers are connecting fine (2 laptops) wirelessly (but with Vista).
I have read a lot of threads, google, books, etc but cannot get anything.
Can copy the results of ifconfig, ping, iwconfig, lshw -C network but cannot do it directly because of no connection.
I use this computer to practice and learn Linux but cannot do it without internet.
Can anybody give me some help.

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Hi Fernando, This question is related to Ubuntu, not to Launchpad itself, so I'm moving it to its proper place. Have you searched amongst Ubuntu answers [1] to see if someone had the same issue you're having? Hope this helps, [1] https://answers.launchpad.net/ubuntu Úrsula
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marcobra (Marco Braida) (marcobra) said : 		#1

Please connect your pc to the net using the wired connection...
Please simply copy and paste in short the result of ifconfig -a command here...

Here an example what i need:

eth0 Link encap:Ethernet HWaddr 00:13:d4:ce:5d:2a
          inet addr:192.168.1.40 Bcast:192.168.1.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

The inet addr:192.168.1.40 Bcast:192.168.1.255
and tell us if you see the row: UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

With UP in it

Thank you.

Revision history for this message
fernando (fminstall) said : 		#2

Marcoba
Thank you for your help
I will copy the whole thing here because I am seeing too many NIC's (ath0, eth0, and wifi0). I only have one NIC a Belkin wireless g. Also will copy iwconfig. I see you say "in short" but i believe you might need all.
fernando@fernando-desktop:~$ ifconfig -a
ath0 Link encap:Ethernet HWaddr 00:11:50:d4:92:0d
          inet6 addr: fe80::211:50ff:fed4:920d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

eth0 Link encap:Ethernet HWaddr 00:0c:f1:97:45:b8
          inet addr:192.168.2.100 Bcast:192.168.2.255 Mask:255.255.255.0
          inet6 addr: fe80::20c:f1ff:fe97:45b8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:121 errors:0 dropped:0 overruns:0 frame:0
          TX packets:187 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:69487 (67.8 KB) TX bytes:25163 (24.5 KB)

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:16436 Metric:1
          RX packets:5220 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5220 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:261000 (254.8 KB) TX bytes:261000 (254.8 KB)

wifi0 Link encap:UNSPEC HWaddr 00-11-50-D4-92-0D-00-00-00-00-00-00-00-00-00-00
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:99 errors:0 dropped:0 overruns:0 frame:279
          TX packets:177 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:199
          RX bytes:14357 (14.0 KB) TX bytes:8142 (7.9 KB)
          Interrupt:21

fernando@fernando-desktop:~$ iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wifi0 no wireless extensions.

ath0 IEEE 802.11g ESSID:"" Nickname:""
          Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated
          Bit Rate:0 kb/s Tx-Power:9 dBm Sensitivity=1/1
          Retry:off RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=0/70 Signal level=-96 dBm Noise level=-96 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Thank you again
Fernando

Revision history for this message
marcobra (Marco Braida) (marcobra) said : 		#3

With eth0 seems you are connected or almost you have a valid ip.

eth0 Link encap:Ethernet HWaddr 00:0c:f1:97:45:b8
          inet addr:192.168.2.100 Bcast:192.168.2.255 Mask:255.255.255.0

and your eth0 have the ip 192.168.2.10

Also seems your Wireless card is UP and it send and receive packet you need only to configure it.

wifi0 Link encap:UNSPEC HWaddr 00-11-50-D4-92-0D-00-00-00-00-00-00-00-00-00-00
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:99 errors:0 dropped:0 overruns:0 frame:279
          TX packets:177 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:199

So please tell

can you visit the http://82.105.36.210/ address if you can read elart.it site you have simply a dns issue.

Thank you

Revision history for this message
fernando (fminstall) said : 		#4

Marcobra.
Thank you for your help and time.
Yes, i typed http://82.105.36.210/
and went to "elart" web site (www.elart.it)
I will wait for your instructions on what to do next.

Fernando

Revision history for this message
Ernest Yang (ernest-atheros) said : 		#5

Your wireless card is not configure, configure it with "iwconfig ath0 essid <YOU ACCESS POINT SSID>". you can configure it with networkmanager from your Ubuntu Desktop.

Revision history for this message
fernando (fminstall) said : 		#6

Ernest
I went to SYSTEMS > ADMINISTRATION> NETWORKTOOLS got into screen DEVICES NETWORK TOOLS.

In the DEVICES tag, i chosed ETH0 with the IPv4 highlighted in the IP INFORMATION window and clicked in the CONFIGURE button.

Then got a window that said:

INTERFACE DOES NOT EXIST

So did i do something wrong or this way of doing it doesn't work in this computer?
I have 8.04 LTS.

Thank you
Fernando

Revision history for this message
Ernest Yang (ernest-atheros) said : 		#7

Follow the instruction here: http://madwifi-project.org/wiki/UserDocs/UsersGuideExamples
you canfigure your wireless card to connect to access point.

Revision history for this message
fernando (fminstall) said : 		#8

My system is now working correctly.
I would like once more to thank everyone that has helped me repair this problem.
Thank you for your time and for sharing your knowledge.
Fernando