From: John Stone (
Date: Tue Sep 05 2017 - 13:27:31 CDT

  Since you are running a test build of VMD 1.9.4 and there are no
NVIDIA GPUs, I believe your problem is the same as the other person
I answered earlier today, a crash caused by a bug in one of the latest
revs of NVIDIA's OptiX library. Try setting this environment variable
before running VMD and see if the crash goes away:

/bin/bash shell:
  export VMDNOOPTIX=1

/bin/csh shell:
  setenv VMDNOOPTIX 1

If that cures the crash, then it is the same as the one observed
by the other recent reporters and it will be fixed when NVIDIA
releases a new OptiX library and/or if I can develop a safe workaround
to prevent it in the interim until NVIDIA gets a new build released.

Best regards,
  John Stone

On Sat, Sep 02, 2017 at 06:07:17AM +0000, Saikat Pal wrote:
> Dear all,
> After installation VMD,when I open VMD this error has shown:
> rlwrap: Command not found.
> /usr/local/lib/vmd/vmd_LINUXAMD64:
> /usr/lib/x86_64-linux-gnu/mesa/ no version information
> available (required by /usr/local/lib/vmd/vmd_LINUXAMD64)
> Info) VMD for LINUXAMD64, version 1.9.4a8 (August 30, 2017)
> Info)
> Info) Email questions and bug reports to
> 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, 4 CPUs detected.
> Info) CPU features: SSE2 AVX AVX2 FMA
> Info) Free system memory: 6469MB (82%)
> Info) No CUDA accelerator devices available.
> Warning) Detected X11 'Composite' extension: if incorrect display occurs
> Warning) try disabling this X server option. Most OpenGL drivers
> Warning) disable stereoscopic display when 'Composite' is enabled.
> Info) OpenGL renderer: Mesa DRI Intel(R) HD Graphics 530 (Skylake GT2)
> Info) Full GLSL rendering mode is available.
> Info) Textures: 2-D (16384x16384), 3-D (512x512x512), Multitexture (8)
> Segmentation fault (core dumped)
> What should I do ?? Please help me out.
> Saikat

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