Ubuntu 14.04 System is not able to access the Internet after installation problem (eth0 identification)

Ubuntu 14.04
1, network cable status, such as normal beating
2, ifconfig instruction not to query network card information

Description The NIC driver is missing.

Using the LSPCI command to view all the driver information in the system, locate the Ethernet controller bar, corresponding to the Ethernet driver:

Ethernet Controller:intel Corporation Device 15b7 (rev. 31)

Then the Intel official website to find the corresponding driver, started not found, and then search the Internet for the corresponding problem information, found the corresponding driver.

After downloading, unzip, compile and install, join the network card.

TAR-ZXVF e1000e-3.3.4.tar.gz # Unzip
CD E1000E-3.3.4/SRC # Switch to the source directory
sudo make install # compile source code
Modprobe e1000e # Join NIC

Wait until the network connection is successful.

Source: http://blog.csdn.net/vivisoul/article/details/78930957

Ubuntu 14.04 System is not able to access the Internet after installation problem (eth0 identification)