From: Axel Kohlmeyer (
Date: Tue Aug 25 2009 - 06:43:51 CDT

On Tue, 2009-08-25 at 11:50 +0200, Barbault Florent wrote:
> Hello,


> I am facing difficulties to install vmd 1.8.7 on my linux machine (fedora,
> intel 64). Installation script is ok, but when I launch the soft I have a
> segmentation fault and the message 'Detected X11 composite extension'. It
> seems that I have to disable the X11 option. Do you know how to do it?

please produce stack trace by running vmd under the debugger.
also, please list all useful information about your system
(vmd startup message, hardware, driver version, os version).
this looks a lot as if you have a broken opengl driver.
details see the instructions on bug reporting on the VMD homepage.


> Regards
> Florent Barbault
> -------------------------------------------------
> Dr Florent Barbault
> Maitre de conferences
> Universite Paris Diderot
> Laboratoire ITODYS
> 15 rue Jean de Baïf, bâtiment Lavoisier
> 75013 Paris FRANCE
> tel : (33) 01-57-27-88-50
> e-mail :

Dr. Axel Kohlmeyer 
Research Associate Professor
Institute for Computational Molecular Science
College of Science and Technology
Temple University, Philadelphia PA, USA.