Ubuntu

No Internet Connection - Wired - Ubuntu 8.10

Asked by OhDannyBoy

I recently put Ubuntu 8.10 onto a pc that I made from different parts. The motherboard is an ECS P4M800PRO-M (V2.0) with the standard VIA VT823x PCI Fast Ethernet Adapter driver. After first installing Ubuntu, the internet connection didn't work, and it still doesn't. After trying pretty much everything I could find on this board, I finally broke down and started my own. My internet connection is a wired connection through a Linksys WRT54GS wireless router. My ISP is Comcast. One thing I've noticed as a common theme is that the "eth0" is supposed to be the ethernet. For some reason, mine is not. Mine is "pan0". Could that be causing my problems?

I've never had internet connection on this computer with Ubuntu. I previously had XP on here and it worked. It's not the cord. The same cord with the same connection as above works perfectly fine with my PS3. When I disable networking and re-enable it, it automatically says "Disconnected. The network connection has been disconnected." I've set up DHCP and it's enabled on my router.

This is my first Linux installation, so I have very little knowledge of anything Linux.

If you can help, please do.

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Huygens
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nhasian (nhasian) said : 		#1

Open a Terminal from the menu Applications → Accessories → Terminal and type:

lshw -C network

please post the output here

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OhDannyBoy (danielahampton) said : 		#2

*-network
  description: Ethernet interface
  physical id: 2
  logical name: pan0
  serial: 3a:4e:c9:40:24:d9
  capabilities: ethernet physical
  configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A multicast=yes

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nhasian (nhasian) said : 		#3

there are no other lines from the lshw -C network command? also can you give us the output of:

ifconfig

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Best Huygens (huygens-25) said : 		#4

For your information the pan0 interface is a network over bluetooth interface. It just mean that Linux detected that you have a bluetooth device, and this could be used for networking. But that is not what you want.

Your problem, as you pointed it out, is that you do not have an eth0 interface. This probably means that Linux did not manage to use your network device or to recognize it. A driver for this card is available from VIA (http://www.viaarena.com/default.aspx?PageID=420&OSID=45&CatID=3160&SubCatID=124) but its installation is far from easy. And sadly your motherboard manufacturer does not support Linux :-( I could not find anything for Linux on its website.

I have googled around also for user feedback for your hardware, and I am hopeless :-(

What you could do is file a bug report that your network card is not supported by the Ubuntu kernel (https://launchpad.net/ubuntu/+filebug). Perhaps, there will be some guys there with more knowledge than I, that will give you a hand.

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OhDannyBoy (danielahampton) said : 		#5

Here's what ifconfig gives me.

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:962 errors:0 dropped:0 overruns:0 frame:0
          TX packets:962 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:69076 (69.0 KB) TX bytes:69076 (69.0 KB)

pan0 Link encap:Ethernet HWaddr 3a:4e:c9:40:24:d9
          inet6 addr: fe80::384e:c9ff:fe40:24d9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:826 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B) TX bytes:276902 (276.9 KB)

pan0:avahi Link encap:Ethernet HWaddr 3a:4e:c9:40:24:d9
          inet addr:169.254.7.110 Bcast:169.254.255.255 Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

Thanks Huygens for that info. Like I said, I'm brand new to this, so the info about the pan0 is beneficial. I'll look into the driver, but I'll probably just end up changing out the motherboard. I have another computer that I just put a quad core in, but that motherboard doesn't support it very well. I'll probably look into moving that board into this computer (after checking the compatibility) and get a new one for the other computer. If there's nothing else I can do with this one.

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OhDannyBoy (danielahampton) said : 		#6

Well, I took your advice Huygens, in a way. I used the cd I have to do a Live session on my laptop. Not only do I have eth0, but I'm also writing this message on my laptop using Ubuntu 8.10! So, I'll concede to you that it is the motherboard and not something wrong with my configuration. I'll check on this computer with the ethernet cable as well, but I'm sure it will still result in the same outcome, which is I have internet connection on my laptop, but not my desktop. Thank you all for your time.

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OhDannyBoy (danielahampton) said : 		#7

Thanks Huygens, that solved my question.

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marcobra (Marco Braida) (marcobra) said : 		#8

Please investigate this might be a Ubuntu bug.

Using live cd please send here the result of lspci terminal command...

Open a Terminal from the menu Applications → Accessories → Terminal and type:

lspci

and please copy and paste result here.

Thank you

Revision history for this message
Huygens (huygens-25) said : 		#9

You do not necessarily need to change the motherboard. If you really want to have Ubuntu and plan on buying something new to have the network, then it would be cheaper to buy a network card (perhaps check in the Ubuntu forums which one is well supported). You can plug it on your motherboard (e.g. PCI) and Ubuntu will recognize it, and you will have network available.

And as marcobra suggested it, even though your motherboard has perhaps no available driver from the manufacturer, it should be working with Ubuntu still (at least because there is a Linux driver from VIA). Therefore, we might open a Ubuntu bug (actually this is not really an anomaly, but could be considered as a request for improvement). Follow marcobra statement and if you do not know how to open a bug report, we can do it for you.

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OhDannyBoy (danielahampton) said : 		#10

Oh yeah! I didn't even think about the network card! I should have, because Ubuntu was running on the computer. The internet connection was the only thing not working. Thanks, I'll do that. I'll also check on submitting a bug report. I'll check the others available to get the formatting right. Thanks.

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quinnten83 (dksluis) said : 		#11

I hve the same issue on my dell inspiron D630 and on my compaq n610c.
I don't think it's the motherboard.
I allready did add my bugreport in another thread, but because I don't know how to use launchpad, I could never find that bug again.
What I did on the cmpaq was install WICD, which is a different network manager, and that works, you should google for the instructions, because you have to remove the current network manager first.
I also have the exact same bug in OpenSuse 11.1, which is why I haven't installed it yet.
I am sure there is a problem or a regression somewhere, either in kernel or in network-manager or in Ubuntu and Opensuse versions.

Revision history for this message
Huygens (huygens-25) said : 		#12

Hello Quinnten,
The only bug it seems you have reported or commented on was: bug #108419 which does not seem related to that problem...

I just got a Dell D620 (perhaps similar to the D630? but it is a broadcom network card) from my work. I plan on installing Ubuntu (as soon as I have made some room on it) and I will report to you if I had any problem with the ethernet card.

Anyway, as you said it is not a problem with the motherboard. It is not a "hardware" problem but a "driver" or software problem. It is just that the motherboard manufacturer does not supply Linux driver.
In addition, a bug statement should be issued on this as the kernel should be able to handle this network card. This could be a regression as you suggested. Anyway, I hope that OhDannyBoy will report the bug.

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Vasan (seenikcet) said : 		#13

Hello Huygens,

 please help me to solve my network configuration issue. i am new for Linux. The error message is "The network connection has been disconnected". please see the below information, may be it will help to fix the issue

semc@Ubuntu:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:24:81:92:19:b3
          inet6 addr: fe80::224:81ff:fe92:19b3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:29 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:136 (136.0 B) TX bytes:8450 (8.4 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:222 errors:0 dropped:0 overruns:0 frame:0
          TX packets:222 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:13904 (13.9 KB) TX bytes:13904 (13.9 KB)

semc@Ubuntu:~$ lshw -C network
WARNING: you should run this program as super-user.
  *-network
       description: Ethernet interface
       product: NetXtreme BCM5755 Gigabit Ethernet PCI Express
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:3f:00.0
       logical name: eth0
       version: 02
       serial: 00:24:81:92:19:b3
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical
       configuration: broadcast=yes driver=tg3 driverversion=3.94 firmware=5755-v3.29 latency=0 module=tg3 multicast=yes
  *-network DISABLED
       description: Ethernet interface
       physical id: 1
       logical name: pan0
       serial: 1a:23:c3:4d:50:42
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A multicast=yes
semc@Ubuntu:~$ lspci
00:00.0 Host bridge: Intel Corporation 82X38/X48 Express DRAM Controller
00:01.0 PCI bridge: Intel Corporation 82X38/X48 Express Host-Primary PCI Express Bridge
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface Controller (rev 02)
00:1f.2 RAID bus controller: Intel Corporation 82801 SATA RAID Controller (rev 02)
01:00.0 VGA compatible controller: nVidia Corporation Quadro FX 370 (rev a1)
3f:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5755 Gigabit Ethernet PCI Express (rev 02)