Problems with wired ethernet connection Ubuntu 11.10
- by Andrew Fielden
After some partition shuffling, I've got a problem on my 11.10 system. The wired ethernet interface fails to come up, although the wireless interface is working.
I'm using NetworkManager. I thought this may be a problem with NetworkManager, so I checked the config files, which look ok. I then tried re-installing the package, but this didn't resolve the issues.
I'm not sure at this point if the problem is due to software configuration, or a hardware problem. I've also tried the cable in other router ports, but same problem.
The symptoms are:-
System settings - Network reports that the cable is unplugged (it isn't)
ifconfig reports the following
eth0 Link encap:Ethernet HWaddr f0:4d:a2:a2:a7:fe
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:10 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:792 (792.0 B) TX bytes:0 (0.0 B)
Interrupt:46 Base address:0xe000
My /etc/network/interfaces file has the following:
auto lo
iface lo inet loopback
My /etc/resolv.conf file has the following:
# Generated by NetworkManager
The router's red light is on for this port
dmesg reports ADDRCONF(NETDEV_UP): eth0: link is not ready
