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y10linux
May 1st, 2009, 04:22 PM
Hi!

After reading these forums for quite a long time I finally registered, this is my first post.

I upgraded recently from Ubuntu 8.04 to 8.10 and my wired network stopped working. Here are some details:

- The wired network did work before (I actually downloaded the files necessary for the upgrade via a wired network).

- The wireless controler keeps on working and I can connect to the internet via wireless but not via wired network (I have tired two different wired networks so far).

I am using Network Manager and the networking is enabled (I have also tried to disable it and enable it again and it didn't work). When I click in the wired network icon, it opens a small dialog that says that the wired network is unmanaged (and currently displays the name of the wireless network I am connected to.

1) I have tried several things without success and believe that the problem is here:

:~$ lspci -nnm|grep 14e4
03:00.0 "Ethernet controller [0200]" "Broadcom Corporation [14e4]" "BCM4401-B0 100Base-TX [170c]" -r02 "Dell [1028]" "Device [01f2]"

I think a "Network Controller" is missing, but do not know how to install it.

2) I thought there might be firmware problems, but this page seems to indicate that my ethernet card (BCM4401-B0 100Base-TX) does not need them:
http://www.fsf.org/resources/hw/net/wired-ethernet

3) lshw -C network

returns:

WARNING: you should run this program as super-user.
*-network
description: Wireless interface
product: PRO/Wireless 3945ABG [Golan] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:0c:00.0
logical name: wmaster0
version: 02
serial: 00:1c:bf:8c:98:e8
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=iwl3945 ip=192.168.1.3 latency=0 module=iwl3945 multicast=yes wireless=IEEE 802.11abg
*-network DISABLED
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: 00:1d:09:be:b8:ed
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical
configuration: broadcast=yes driver=b44 driverversion=2.0 ip=84.88.154.117 latency=64 module=ssb multicast=yes
*-network DISABLED
description: Ethernet interface
physical id: 1
logical name: pan0
serial: d2:e0:bd:88:8a:c4
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A multicast=yes


which seems to indicate that the device is off, there is no way to physically turn it on (at least not that I know about). I never did turn it on in Ubuntu 7.10 or 8.04 where the wired network worked just fine.

Well thanks for reading all these and I hope I happened to provide some useful information.

zvacet
May 1st, 2009, 08:51 PM
Similar thing here,but I have just one connection and even network manager is telling me that device is unmanaged I have connection.Well,that is not what are you asking.Try to put in /etc/network/interfaces this lines


auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp

y10linux
May 2nd, 2009, 02:57 PM
Similar thing here,but I have just one connection and even network manager is telling me that device is unmanaged I have connection.Well,that is not what are you asking.Try to put in /etc/network/interfaces this lines

The file you mention contains:

auto lo
iface lo inet loopback


iface eth0 inet static
address 84.88.154.117
netmask 255.255.254.0
gateway 84.88.154.1

auto eth0

Should I add the line:

iface eth0 inet dhcp

at the end of the file?

y10linux
May 3rd, 2009, 03:39 PM
Similar thing here,but I have just one connection and even network manager is telling me that device is unmanaged I have connection.Well,that is not what are you asking.Try to put in /etc/network/interfaces this lines

Well, tried that and it does not seem to work...

Thanks for your help anyway, I'm going to keep trying to solve this...

deeppow
May 5th, 2009, 12:29 AM
Same problem here with new install of 8.10 Also tried 9.04, same problem.

Instructions in either version of help are of no use, plus must be written for older versions.

I had 8.04 working awhile back with no problems.

deeppow
May 5th, 2009, 12:57 AM
If you have a Marvell Yukon connector, try this link http://ubuntuforums.org/showthread.php?t=781022

y10linux
May 5th, 2009, 09:09 AM
In this thread https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/357509 and the references therein you can find some more information.

I finally got to "solve" the problem (in 9.04) by erasing all the interfaces (that seemed to be ignored anyway) in /etc/network/interfaces and leave this files with just two lines:

auto lo
iface lo inet loopback

THEN I configured my wired network with network manager and got it working at work (where I have a fixed internet address). I still haven't managed to get it working at home, but I have not been able to dedicate much time to it yet.

stretch427
May 5th, 2009, 09:15 AM
If it only works at your work, and not at home it could also be a router problem, or should I say an oddly configured setting.

I know with my router I sometimes have to set to allow certain computers and stuff. Just a thought. Maybe try resetting your home router or modem, whichever you have.

Cheers!