Problem

Ethernet RTL8111/8168/8411 is not recognized by kernel 4.4.39-rt50. Running ifconfig shows only the other network interface and lo.

Solution

It turns out the realtime kernel does not have module r8168. Instead it contains r8169. However, by installing r8168-dkms the r8169 module is …

• Disable WIFI and plug in an internet cable to your laptop so that your Ubuntu is connect to a wired internet and wireless is disabled.
• Go to Network Icon on top panel -> Edit Connections …, then click the “Add” button in the pop-up window.
• Choose Wi-Fi from the drop-down menu when …

The following steps are needed for Kinect to work properly in Ubuntu 14.04.

• Prerequisites
• OpenNI
• Kinect Sensor Module
• Possible user group tuning

Prerequisites

The necessary packages:

$ sudo apt-get install git build-essential python libusb-1.0-0-dev freeglut3-dev openjdk-7-jdk

Optional:

sudo …