Kinect working, but not connection to freenect or openni

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Hi all,

this seems to be a widespread problem, but even with all the proposed solutions I don't seem to get it to work:

I am trying to use a Microsoft Kinect v2 with ROS.

The camera is connected and I can stream the images using

rosrun kinect2_viewer kinect2_viewer

Therefore I concluded that the basic connection to the camera is working fine. Unfortunately when I try to connect to the camera using freenect

roslaunch freenect_launch freenect.launch

I don't seem to be able to get it to work, producing the following error message:

[ INFO] [1503322404.266304684]: No devices connected.... waiting for devices to be connected

I have also tried using openNI, which produces the same error message in the process.

I know this is a well discussed error in the community and I've tried various suggested solutions from reinstalling freenect and openNI respectively, applying a patch (as seen in: https://answers.ros.org/question/6056... ) and everything else that was suggested...

But so far nothing seemed to work! Still getting the same error about not finding the Kinect...

Any sort of pointer or hint in a direction is extremely appreciated! I'm running out of ideas (even for new ways to google the issue!)

Thanks in advance everyone!

P.S.: I am using ROS Indigo and Ubuntu 14.04 with a Kinect v2 connected to a USB 3.0 port