[Bug 554988] [NEW] wired network not recognized

Launchpad Bug Tracker 554988 at bugs.launchpad.net
Thu Apr 8 21:07:42 UTC 2010


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PROBLEM:
Fresh install of Ubuntu 9.10 on a Lenovo (IBM) ThinkCentre M58e did not recognize or connect to a wired network connection via DHCP.  Changes to /etc/network/interfaces and /etc/NetworkManager/nm-system-settings.conf did not help solve in any combination.

INFORMATION:
ifconfig returns:
"
eth0      Link encap:Ethernet  HWaddr 00:01:6c:52:59:91  
          inet addr:10.0.1.3  Bcast:10.0.1.255  Mask:255.255.255.0
          inet6 addr: fe80::201:6cff:fe52:5991/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5048 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3350 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:7071554 (7.0 MB)  TX bytes:288297 (288.2 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:39 errors:0 dropped:0 overruns:0 frame:0
          TX packets:39 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:6583 (6.5 KB)  TX bytes:6583 (6.5 KB)
"

/etc/network/interfaces :
"
#auto lo
#iface lo inet loopback

#mapping hotplug
#       script grep
#       map eth0

#auto eth0
#iface eth0 inet dhcp
"

/etc/NetworkManager/nm-system-settings.conf :
"
# This file is installed into /etc/NetworkManager, and is loaded by
# NetworkManager by default.  To override, specify: '--config file'
# during NM startup.  This can be done by appending to DAEMON_OPTS in
# the file:
#
# /etc/default/NetworkManager
#

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true
"

SOLUTION:
Adding the line to "e1000" (without quotes) to the file /etc/modules allows for the recognition of the wired network and results in near immediate connection to the internet.

/etc/modules :
"
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.

lp
e1000
"

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
wired network not recognized
https://bugs.edge.launchpad.net/bugs/554988
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