Is there a problem of enabling stereo without enabling doublebuffering? I modified Gears.java example to include
capabilities.setStereo(true); and, as expected, I got stereo emitters signal on. Then I added capabilities.setDoubleBuffered(false) and didn't get emitter's signal.
My setup is Red Hat Linux and Nvidia Quadro FX 1000 card with driver v. 81.78.