Treble C

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Hi, I upgraded from Ubuntu 9.4 to 9.10 and although I have an internet broadband connection via an ethernet cable from the router and it shows connection OK in the notification area top right of the screen. The trouble is Firefox browser,Pidgin IM and the Package Manager cannot connect to the internet for some reason. I am using a linux live distro (PCLinuxOS) off a cd to write this and it is connecting OK. Hope someone can help.

Charles

indiajoe

Hi
Are you able to ping to the router?
Give more details like the output of ifconfig.
We will be able to help.
-Cheers
indiajoe

Treble C

Thanks for the reply Indiajoe,

When I ping the router gateway I get the following, 56(84) bytes of data.

When I ping the internet address nothing happens, I left it running for 10 min then had to close terminal.

The output of ifconfig is the following.

charles@charles-desktop:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:e6:1b:c0:1c
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:e6ff:fe1b:c01c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1011 errors:0 dropped:0 overruns:0 frame:0
TX packets:1054 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:98359 (98.3 KB) TX bytes:101473 (101.4 KB)
Interrupt:21 Base address:0xdc00

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:18 errors:0 dropped:0 overruns:0 frame:0
TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1228 (1.2 KB) TX bytes:1228 (1.2 KB)

Looking forward to your reply

Charles

indiajoe

Hi,
So what I understand is as follows.
You are able to ping to 192.168.1.X (The router). ie you get 0% packet loss.
But when you ping to some internet website (say www.google.com) you are getting "connect: Network is unreachable" Error. Am I correct?
Or are you just getting 100% packet loss, with "Destination Host Unreachable" error ?
And did you verify whether the settings in the firefox proxy settings are same as that in the live cd you are using to connect to internet?
Your ifconfig output shows you machine is getting an IP. So connection with router is fine. Problem is at some internet setting.
-Cheers
indiajoe

akilenc

Hi I have the same problem.

When I ping from terminal i am able to ping to www.google.com or to any other web site.

But I am not able to connect via firefox or any bundle with ubuntu 9.10.

Treble C

Hi
In Firefox the error I get is, Firefox can't find server at wwww.google.com. I tried the Konqueror browser and its error said, connection to server refused.

The proxy settings in Firefox on both O/S is, use system proxy settings.

Last night I used Bit-Defender anti-virus and it updated itself via an internet connection on Ubunto 9.10 how it did this I don't know as Firefox wouldn't connect. Also I ran Suns virtual box and the guest O/S connected to the internet with no trouble.

Charles

repo

Seems to me there is a problem with DNS


What is the output from

akilenc

#cat /etc/resolv.conf

#Generated by NetworkManager
nameserver 10.0.0.138
---------------------------------
#nslookup [url]www.google.com

Server: 10.0.0.138
Address: 10.0.0.138#53

Non-authoritative answer:
www.google.com canonical name=www.l.goolge.com
www.l.google.com canonical name=www-tmmdi.l.google.com.
Name: www-tmmdi.l.google.com
Address: 66.102.9.147
Name: www-tmmdi.l.google.com
Address: 66.102.9.105

repo

Any firewall ?

Treble C

Hi Repo

#cat.ect.resolv.conf

# Generated by NetworkManager
nameserver 192.168.1.1

#nslookup www.google.com

Server: 192.168.1.1
Address: 192.168.1.1#53

Non-authoritative answer:
www.google.com canonical name = www.l.google.com.
www.l.google.com canonical name = www-tmmdi.l.google.com.
Name: www-tmmdi.l.google.com
Address: 66.102.9.104
Name: www-tmmdi.l.google.com
Address: 66.102.9.103
Name: www-tmmdi.l.google.com
Address: 66.102.9.105
Name: www-tmmdi.l.google.com
Address: 66.102.9.147
Name: www-tmmdi.l.google.com
Address: 66.102.9.99

The Firewall is linux Firestarter, when I start the GUI for Firestarter a message comes up stating it can not connect to the internet.

Charles

repo

try to disable the proxy in firefox

Treble C

Hi

I clicked the no proxy radio button in The Firefox network section but its still not connecting to the internet.

Charles

jay73

That says your modem is acting as a DNS server. For most people, that won't be true. You will probably need a real DNS server address.

repo

Try to disable ipv6

http://www.cyberciti.biz/tips/linux-...-protocol.html
http://en.opensuse.org/Disable_IPv6_for_Firefox

Treble C

Thanks Repo for the links and advice to disable ipv6. I managed to disable ipv6 in Firefox alright and I am able to connect to the internet now with Firefox. My efforts to disable ipv6 in Ubuntu was unsuccessful, I don't have the aliases file in the modprobe.d folder, however after searching Google and trying to do several suggestions, looking for the grub folder etc I gave up and had tea.
Then when I came back to the computer again I found Pidgin IM was online also the Update Manager and the Ubuntu Software Centre, the only programme not connecting is Evolution Mail.

Once again thank you for helping me overcome my problem.

Charles