The network service in my computer (Ubuntu LTS 12.04, upgraded) suddenly stopped working. The only clue in
/var/log/syslog are lines like this,
Mar 8 16:51:51 Rafid-Hamiz-OptiPlex kernel: [ 14.617413] init: network-manager main process (879) terminated with status 127 ..... Mar 8 16:53:56 Rafid-Hamiz-OptiPlex AptDaemon.NetMonitor: WARNING: Failed to determinate network state
I use a static address wired network with fixed MAC.
ping to my NIC address shows that the network process is not running.
service networking status
showed that the service is stopped.
service networking restart
did not improve the scenario.
Rebooting the machine was of no help either.
When I tried to set the network from System Settings, I got message in the line of "the network type is not consistent or some such". I forgot to take a screen shot.
None of the user accounts in this machine can get network. Even the network icon does not appear.
Now, when I booted the machine with Ubuntu CD (the same 12.04), and set the network parameters (IP address, MAC, gateway) just like my original one, network started working. This is how I am asking this question.
I do not know even where to start the remedial process. Which setting got corrupted in my machine? How do I get network service in the original machine and stop working from CD?
Any help will be appreciated.