VMD-L Mailing List

From: R.Sathyapriya (spriya_at_mbu.iisc.ernet.in)
Date: Wed Jun 11 2003 - 10:10:31 CDT

 Hello,
        This is a follow up e-mail of the problem posted early in this
site regarding the VMD openGL window not opening (VMD-1.8, with RedHat
9)and exiting with error saying 'Cannot open OpenGL window'.The graphic
card used is NVidia GeForce 2 MX 200.Examination of the glxinfo file
gave the gave the following message:
 
       ' direct rendering: No '
       
       I have tried to open VMD as root and still the problem persists
and exits with the same error.Hence changing permissions of /dev/nvidia0
and /dev/nvidiactl didnot really help.
       
       Suggestions greatly acknowledged!
 
       Thanks in advance for your time,

 Regards,
 -spriya.
        
        
Date: 10 Jun 2003 09:06:50 +0200
From: Teletchéa Stéphane <steletch_at_biomedicale.univ-paris5.fr>
To: Ramesh K. Sistla <sistla_at_mbu.iisc.ernet.in>
Cc: VMD Mailing List <vmd-l_at_ks.uiuc.edu>
Subject: Re: VMD Error!

Le mar 10/06/2003 à 09:33, Ramesh K. Sistla a écrit :
> > Look at the command glxinfo, it will tell you if your hardware supports
> > direct rendering, what is your graphic card model ?
> >
> Hi Stef!
>
> Thanks for the reply.
>
> The graphics card is NVIDIA GeForce 2 MX. glxinfo says the card doesn't
> support direct rendering.
>
> direct rendering: No
>
> But I am curious that this was working on the same setup a few days
> back!
> Let me know your thoughts about this.
> regards
> --

I suppose you are using the nvidia's proprietary code.
If so, i feel something about permissions.

Try to log in as root, and launch vmd there.
If it runs, it is then that your /dev/nvidia0 and /dev/nvidiactrl is no
more readable by normal users.

You can change it by chmod 0666 /dev/nvidia and /dev/nvidiactrl

I suppose you have a cron table that verifies periodically the
permissions (in mdk, for example it is regulated via msec).

Stef 

-- 
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