Quad-buffered OpenGL stereo does not display both buffers

When using quadrant stereo with my application, my graphics card supports quadrant stereo (Quadro 5000 / PCIe / SSE2), only one buffer is shown on the screen, I use oversaturation and openGL with vbos arrays, I initialize oversaturation like this:

    int type = GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH | GLUT_STEREO;
    glutInitDisplayMode(type);
    glutInitWindowSize(width,height);

    win = glutCreateWindow(title.c_str());
    glutSetWindow(win);     
    GLenum err = glewInit();
    if (GLEW_OK != err) {
        fprintf(stderr,"  ## ERROR: %d: %s\n",
            (int)err,(char*)gluErrorString(err));       
    }
    glutDisplayFunc(loop_function);

      

        
        
        
      

    

and when drawing here, I fill both buffers:

        glDrawBuffer(GL_BACK_LEFT);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    camera->OnMouseMotion(sf::Vector2i(-100,0));
    camera->look();
    for (auto i = objects->cbegin(); i != objects->cend(); ++i)
        (*i)->draw(camera);
    glDrawBuffer(GL_BACK_RIGHT);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    camera->OnMouseMotion(sf::Vector2i(200,0));
    camera->look();
    for (auto i = objects->cbegin(); i != objects->cend(); ++i)
        (*i)->draw(camera);
    camera->OnMouseMotion(sf::Vector2i(-100,0));
    camera->look();

    glutSwapBuffers();

      

        
        
        
      

    

For both eyes, only the right buffer (last) is displayed. I first tried drawing the right buffer, but then the display is empty (none are drawn) OnMouseMotion does indeed move the mouse according to the position, and I know my movements are not set properly, but now I am focusing on displaying two different images, one for the right eye, the other for the other. Did I forget something? or maybe the gl calls are wrong?