"Server not found" in Firefox all the time with ubuntu

Then try to visit this network address: http://82.105.36.210/

If it works, please open System->Administration->Network select your network device
select the dns tab and add dns for examples openDNS

208.67.222.222
208.67.220.220

https://www.opendns.com/start

----- if you a still in trouble

Please open a Terminal from the menu Applications->Accessories->Terminal type:

cat /etc/resolv.conf

and

ifconfig -a

and copy and paste the result here

Thank you

Type in a terminal,

sudo dhclient

and try again with firefox.

Hi marcorba. Thanks for the reply. I tried to connect http://82.105.36.210/, but firefox got stuck at "Connecting to ...".

Then, I did exactly what you recommended and here's the output for the terminal commands:

barno@barno-laptop:~$ cat /etc/resolv.conf

# generated by NetworkManager, do not edit!

nameserver 192.168.1.1

barno@barno-laptop:~$ ifconfig -a

eth0 Link encap:Ethernet HWaddr 00:16:36:94:D4:69

          UP BROADCAST 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:1000

          RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

          Interrupt:16

eth1 Link encap:Ethernet HWaddr 00:18:DE:47:4A:DA

          inet addr:192.168.1.119 Bcast:192.168.1.255 Mask:255.255.255.0

          inet6 addr: fe80::218:deff:fe47:4ada/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

          RX packets:632 errors:8 dropped:312 overruns:0 frame:0

          TX packets:99 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:142061 (138.7 KB) TX bytes:9082 (8.8 KB)

          Interrupt:17 Base address:0x8000 Memory:34100000-34100fff

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: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)

barno@barno-laptop:~$

Any suggestions? Thanks much.

Omar Olarte. Thanks for your reply, too.But sudo dhclient did not help. Thanks anyway.

So you have two network cards, try ping the 209.85.129.147 a google ip address

Open a terminal and type:
ping 209.85.129.147
stop it with ctrl+c

Have you added the dns server ips i can't see thet into the resolv .conf

Please also to set as default gateway the router address 192.168.1.1 into the two nic card using the System->Adm->Network menu.

Please tell us your router brand and model may be you must configure and use ppp with the pppoeconf utility to get connection.

Thank you

macobra,

1) ping gave me only one line (didn't have to stop it):

PING 209.85.129.147 (209.85.129.147) 56(84) bytes of data.

2) I don't know if I have added the dns server ips. How do I do that?

3) I set the default gateway (Static IP, IP adres 192.168.1.2 , Subnet mask 255 etc)

And now Firefox loaded yahoo.com. For a moment I thought how wonderful my life was. I decided to double-check if everything was working ok, and restarted the computer. Now it is back where it was: it connects to the network, but Firefox would not load pages again. Arrgh.

I tried to set the gateway again, and it does not seem to help this time.

Well what do you think the problem is? Is there any way I can permannetly fix this.

Thanks again.

BTW, can't tell what the router brand and model are cuz I am using my neighbors unsecured network (which works fine on my other windows-based laptop). I also couldn't make Ubuntu work with my broadband cable connection (it says it's connected to the wired network, but firefox won't work here too).

hello,
try this command in terminal and post the result:
sudo iwlist eth1 scan

Hi naufal, Here what "sudo iwlist eth1 scan" resulted in:

barno@barno-laptop:~$ sudo iwlist eth1 scan
eth1 Scan completed :
          Cell 01 - Address: 00:16:B6:1B:5A:15
                    ESSID:"linksys"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=81/100 Signal level=-53 dBm Noise level=-53 dBm
                    Extra: Last beacon: 56ms ago
          Cell 02 - Address: 00:14:95:1E:2C:A1
                    ESSID:"2WIRE512"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=73/100 Signal level=-61 dBm Noise level=-61 dBm
                    Extra: Last beacon: 236ms ago
          Cell 03 - Address: 00:1C:10:14:8C:FA
                    ESSID:"glassonion"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=48/100 Signal level=-80 dBm Noise level=-80 dBm
                    Extra: Last beacon: 48ms ago
          Cell 04 - Address: 00:16:01:14:21:57
                    ESSID:"001601142156"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Channel:2
                    Frequency:2.417 GHz (Channel 2)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=51/100 Signal level=-78 dBm Noise level=-78 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 236ms ago
          Cell 05 - Address: 00:16:B6:F2:9C:38
                    ESSID:"WLAN666"
                    Protocol:IEEE 802.11g
                    Mode:Master
                    Channel:5
                    Frequency:2.432 GHz (Channel 5)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=37/100 Signal level=-87 dBm Noise level=-87 dBm
                    IE: WPA Version 1
                        Group Cipher : WEP-40
                        Pairwise Ciphers (2) : TKIP WEP-40
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : WEP-40
                        Pairwise Ciphers (2) : TKIP WEP-40
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 208ms ago

barno@barno-laptop:~$

BTW, it shows it's connected to "linksys".

Type in terminal:
ping www.google.com
see what the result...

naufal, i don't have my laptop with me at the moment but i tried pinging www.google.com before and it says something like "host not found". but when i ping the ip address for google, then ping does show the results (packet exchange, errors, etc.)

hello,
what brand of wireless card on your laptop?
type in terminal:
lspci

ok, thanks to everybody. i think i'll go back to windows. ubuntu is great, but i guess it's just conflicting with drivers, etc.

shokhrukh,

Im having the same problems as you... i have a friend comming over this wkend to fix it... if i learn anything ill let you know lol. its the first time i feel like an idiot with a computer... i like my windows .