Ubuntu 14.04 e450c not connected to the Internet.

In the System tool see, Wireless card driver is Broadcom, but still want to through LSPCI to see the model of the wireless network card, display b723

Realtek b723 No WiFi driver solution:

To View the NIC command:
$ lspci | grep Network
$ sudo apt-get install git
$ git clone https://github.com/lwfinger/rtlwifi_new.git
$ cd rtlwifi_new
$ sudo make
$ sudo make install

Similar:

http://blog.163.com/zz_forward/blog/static/212898222201592293539948/

Ubuntu 14.04 e450c not connected to the Internet.