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Condition: controlling 3D Image output of test code by mouse cause all CPUs to 100%; differential solutions do not help; no clicking of mouse on image
Motivation: to understand why mouse activates 3D Image process even when no evaluation of the notebook in Debian Mathematica

Fig. 1 My Desktop where trying to overlay the figure and delete it causes the CPUs to max; doing Clear[data] before that does not help

enter image description here

I need the notebook but the object keeps locking its use. Test code

(* system info for WRI *)
SystemInformation[]    

(* http://mathematica.stackexchange.com/q/38305/9815 *)
data = Table[
   Exp[-3 (x^2 + y^2 + z^2)], {x, -1., 1, .01}, {y, -1., 
    1, .01}, {z, -1., 1, .01}];

Image3D[data, ClipRange -> {{100, 200}, {0, 200}, {100, 200}}, 
 ColorFunction -> Automatic] (* default colour function *)

System characteristics

masi@masi:~$ glxinfo | grep OpenGL
OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.5, 256 bits)
OpenGL version string: 3.0 Mesa 10.3.2
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
masi@masi:~$ echo $LD_LIBRARY_PATH

masi@masi:~$ 

Mathematica startup option as instructed by Wolfram but still unsuccessful output

  1. I run

    masi@masi:~$ rm .Mathematica/ 
    masi@masi:~$ su
    root@masi:/home/masi# rm -r /usr/share/Mathematica/
    
  2. Do clean start

    masi@masi:~$ mathematica -cleanstart
    
  3. Get a new university licence for Mathematica and activate

  4. Start mathematica with the option

    mathematica -mesa
    

I contacted Wolfram student support with a link to this thread, waiting their answer for three days.

OS: Debian 8.5
Linux kernel: 4.6 of backports set up as described here
Graphics: modesetting set up as described in the thread How Smooth is Upgrading Linux kernel in Debian 8.5?
Mathematica: 11 student edition
Mathematica documentation: How can I address broken 3D graphics on Linux with certain graphics cards
Hardware: Asus Zenbook UX303UA
Differential solutions: Clear[data], Quit kernel in Menu Evaluation

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This was a bug in Mathematica 11.0.0 in Debian. Their testing was mostly in Mint Linux, where they did not obverse the problems. I posted a report about the case to Mathematica, where they promptly reacted and fixed the case. The new release Mathematica 11.0.1 is significantly better in Debian 8.5.

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