From: Axel Kohlmeyer (akohlmey_at_gmail.com)
Date: Fri Jan 25 2013 - 02:28:15 CST

On Fri, Jan 25, 2013 at 7:22 AM, ragesh c <crnambiar86_at_yahoo.co.in> wrote:

> hi,
> my vmd was working fine on ubantu 12.04. One day i have insatlled
> NVDIA graphics card to check wether its supporting or not and its was very
> working fine . After that i have removed graphics card and restart the
> system and when i tried to open vmd it showing following error.
>
>
>
> Info) VMD for LINUXAMD64, version 1.9.1 (February 1, 2012)
> Info) http://www.ks.uiuc.edu/Research/vmd/
> Info) Email questions and bug reports to vmd_at_ks.uiuc.edu
> Info) Please include this reference in published work using VMD:
> Info) Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
> Info) Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> Info) -------------------------------------------------------------
> Info) Multithreading available, 8 CPUs detected.
> Info) Free system memory: 13585MB (86%)
> Warning) Detected a mismatch between CUDA runtime and GPU driver
> Warning) Check to make sure that GPU drivers are up to date.
> Info) No CUDA accelerator devices available.
> Warning) Detected X11 'Composite' extension: if incorrect display occurs
> Warning) try disabling this optional X server feature.
> ERROR) The X server does not support the OpenGL GLX extension. Exiting
> ...
> Info) VMD for LINUXAMD64, version 1.9.1 (February 1, 2012)
> Info) Unable to create OpenGL window.
>
> what should i do now to run vmd without nvdia graphics card?
>
>
is it intentional, that you start X from a remote location?

your xserver configuration must have lost the GLX capability.
i don't know ubuntu, but it may have automatically updated
your xserver configuration and in the process messed it up.

definitely not a VMD problem.

axel.

-- 
Dr. Axel Kohlmeyer  akohlmey_at_gmail.com  http://goo.gl/1wk0
International Centre for Theoretical Physics, Trieste. Italy.