From: John Stone (
Date: Wed Jan 20 2016 - 16:00:59 CST

  The use of stereo when the composite extension is on is prohibited
by the underlying video driver, VMD is just reporting what the driver says
when VMD asks for stereo.... The driver limitation (that the composite
extension ends up disabling stereo) is documented in the NVIDIA driver
READMEs, and the latest drivers provide a simple command line flag for
nvidia-xconfig to disable or enable the composite extension:

Here is the key text from the NVIDIA README:
  "Workstation overlays, stereo visuals, and the unified back buffer (UBB)
   are incompatible with Composite. These features will be automatically
   disabled when Composite is detected."

When you start the X11 server, you'll see warning messages
about stereo being disabled in the X11 server logs, in /var/log/Xorg.0.log

As far as I know there is no way around this. I'm not sure why KDE
cannot be run without the composite extension, but if you care about
using stereoscopic display modes, it might be time to switch from KDE to a
different desktop manager.

  John Stone

On Wed, Jan 20, 2016 at 06:45:30PM +0100, Vlad Cojocaru wrote:
> Dear VMD users, developers,
> I have installed the new openSUSE (Leap - 42.1) and I am able to run
> neither KDE nor GNOME properly with "Composite" disabled. With
> "Composite" enabled I am not able to use stereoscopic viewing in VMD
> with NVIDIA 3D vision. Does anyone know if there is any way to make VMD
> display stereo with the "Composite" extension enabled ? On my previous
> openSUSE 13.2, KDE was running properly with "Composite" disabled, so I
> was able to use stereo (Quad Buffered)
> I have the following setup:
> x86_64 arch
> VMD 1.9.2 (compiled from source)
> NVIDIA driver 358.16
> CUDA 7.5.18
> OPTIX 3.9.0
> NVIDIA 3D Vision
> Graphics card: Quadro K4000
> Thanks for any advice
> Best wishes
> Vlad
> --
> Dr. Vlad Cojocaru
> Computational Structural Biology Laboratory
> Department of Cell and Developmental Biology
> Max Planck Institute for Molecular Biomedicine
> Röntgenstrasse 20, 48149 Münster, Germany
> Tel: +49-251-70365-324; Fax: +49-251-70365-399
> Email: vlad.cojocaru[at]

NIH Center for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801           Phone: 217-244-3349