I have Ubuntu 14.04 box, which was powered off for several months. I have turned it on, it worked, also network worked and I foolish ran sudo apt-get upgrade.
This caused my system has no network anymore. During boot, it displays messages from this "waiting for network configuration" Problem question. The solution from this question (strange one) does not work for me. I mean, if I remove eth0 from /etc/netwrok/interfaces then error message disappears but network doesn't appear.
Machine has two network devices, which are marked UNCLAIMED by sudo lshw -C network.
How to fix?
UDPATE
I have read that this may be related with glitching network-manager and uninstalled it (it was installed) - this didn't help.
ifconfig shows only loopback interface.
UDPATE 2
sudo ifup eth0 says
Cannot find device "eth0"
Error getting hardware address for "eth0": No such device
Failed to bring eth0 up eth0
UPDATE 3
Configuring eth0 as static didn't help.
