From: John Stone (johns_at_ks.uiuc.edu)
Date: Tue Aug 19 2014 - 15:26:22 CDT

Hi,
  If the whole windowing system crashes, that would be an indication of
problems with your video driver, not VMD. Are you running the
latest NVIDIA driver, or are you using one fo the open source
video drivers such as nouveau?

Cheers,
  John Stone
  vmd_at_ks.uiuc.edu

On Thu, Aug 14, 2014 at 05:19:57PM +0530, Anoop Krishnan wrote:
> I have been using VMD for past four years in my Pentium Dual-Core CPU
> (E5300_at_2.6 GHz * 2) with 4 GB RAM and Ubuntu 12.04 - 32 bit. Recently, I
> added a graphics card NVIDIA GeForce GTX 750 Ti to the system. Once, I
> have installed the graphics card VMD is working smoothly. However, I'm
> unable to access the Extensions tab in VMD. Once I click on any of the
> options in Extension such as Movie maker or Nanotube builder, system
> instantly crashes and goes to the login screen.
>
> I have been unable to figure out the problem as the graphics card and VMD
> are otherwise working smooth. It would be great if someone can suggest any
> solution to this issue.
>
> Thank you
> Regards
> --
> Anoop Krishnan N M

-- 
NIH Center for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
http://www.ks.uiuc.edu/~johns/           Phone: 217-244-3349
http://www.ks.uiuc.edu/Research/vmd/