system  
                
                  
                    April 26, 2020,  8:51pm
                   
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Dear experts:
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                system  
              
                  
                    April 27, 2020,  7:55am
                   
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Hi Andrade,
what you report is not an MNE issue it's a mayavi issue.
you may want to test the pyvista backend in the 0.20 version
Alex
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                system  
              
                  
                    April 27, 2020,  9:00am
                   
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Sorry I am so ignorant so many times about this topic.
When I run my code. Instead of using mayavi it will use pyvista? Do I have to uninstall mayavi then? Or it will use both?
             
            
              
            
           
          
            
              
                system  
              
                  
                    April 29, 2020, 11:30pm
                   
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You should use this function:
https://mne.tools/stable/generated/mne.viz.set_3d_backend.html#mne.viz.set_3d_backend 
No need to uninstall mayavi. You can switch back and forth between the two.
Mainak