Unable to connect to the internet

Asked by ion on 2008-11-23

Hi,

I just installed Ubuntu 8.10 and I cannot connect to the internet (it is a wired connection). I am using a Dell Inspiron E1505; the Ethernet connection seems to be working fine. I tried the next commands for which I got:

ion@ion:/etc/network$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:15:c5:ac:f9:f1
          inet addr:160.39.0.20 Bcast:160.39.3.255 Mask:255.255.252.0
          inet6 addr: fec0::8:215:c5ff:feac:f9f1/64 Scope:Site
          inet6 addr: 2002:a027:e1c4:8:215:c5ff:feac:f9f1/64 Scope:Global
          inet6 addr: fe80::215:c5ff:feac:f9f1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:8076 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1290124 (1.2 MB) TX bytes:7291 (7.2 KB)
          Interrupt:17

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:242 errors:0 dropped:0 overruns:0 frame:0
          TX packets:242 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:15132 (15.1 KB) TX bytes:15132 (15.1 KB)

ion@ion:/etc/network$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 01)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19)
03:01.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 0a)
03:01.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 05)
0b:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)

ion@ion:/etc/network$ lshw -c network
WARNING: you should run this program as super-user.
  *-network
       description: Network controller
       product: BCM4311 802.11b/g WLAN
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0b:00.0
       version: 01
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list
       configuration: driver=b43-pci-bridge latency=0 module=ssb
  *-network
       description: Ethernet interface
       product: BCM4401-B0 100Base-TX
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 02
       serial: 00:15:c5:ac:f9:f1
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical
       configuration: broadcast=yes driver=b44 driverversion=2.0 ip=160.39.0.20 latency=64 module=ssb multicast=yes
  *-network:0 DISABLED
       description: Wireless interface
       physical id: 1
       logical name: wlan0
       serial: 00:18:f3:3d:ba:e6
       capabilities: ethernet physical wireless
       configuration: broadcast=yes multicast=yes wireless=IEEE 802.11bg
  *-network:1 DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: pan0
       serial: fa:75:d4:18:cb:bf
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A multicast=yes

Thanks.

Question information

Language:
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Status:
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Ubuntu Edit question
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Last query:
2008-11-25
Last reply:
2008-11-29
Anton Roeder (filtered4spam) said : #1

What do you mean by "I cannot connect to the internet"? Your browser doesn't show you pages on the internet? What's the error message? You can't receive e-Mails with your client? What's the error message?
Have you tried pinging some hosts on the net? How did you determine that ethernet is working (it looks like it from the ifconfig command, but have you tried connecting to some host in the network)? How do you usually connect to the Internet?

ion (igm2103) said : #2

I cannot ping google.com the result is network host unreachable. I also tried to ping google's ip and the result is the same. I have a dual boot with windows xp and this is my typical connection which does not require any special settings.

Karunesh Johri (kj-softprayog) said : #3

Try to ping to some known IP address instead of a domain name. If that works, possibly you have not configured the nameserver on your machine.

Can you help with this problem?

Provide an answer of your own, or ask ion for more information if necessary.

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