Installation from Live CD of Ubuntu 14.04 on ASUS-based desktop (motherboard M3A-79T Deluxe with 88E8055 PCI-E Gigabit Ethernet Controller by Marvell) highlighted 'no internet connection' issue. So I plugged USB WiFi dongle which was immediately detected by network manager so installation has downloaded all updates via WiFi. Upon restart updated network manager failed to detect connection on my eth0 again. Literally I was able to create and store new connection manually but never had a chance to get connected with it. Running following commands in console gave me below results:
$ ifconfig -a
eth0 Link encap: Ethernet HWaddr 00:00:00:00:00:00
..........
Interrupt: 18
$ sudo lshw -c network
*-network DISABLED
description: Ethernet interface
product: 88E8055 PCI-E Gigabit Ethernet Controller
.......
*-network
description: Wireless interface
physical id: 1
bus info: usb@1:1
.......
When I tried
sudo ifup eth0
or
sudo ifconfig eth0 up
the feedback was Cannot assign requested address
Any suggestions?