From: Axel Kohlmeyer (
Date: Thu Mar 08 2012 - 21:06:08 CST

On Thu, Mar 8, 2012 at 6:53 PM, Shalabh Maroo <> wrote:
> Hi,
> I got a new Dell Workstation with Red Hat 6.2. I installed VMD and it was
> running fantastic as always. But then I had the updates from Red Hat and
> installed them. Now, the VMD display does not show up properly. I get the
> following:
> Info) Creating CUDA device pool and initializing hardware...
> [New Thread 0x7fffef581700 (LWP 9549)]
> Info) Detected 1 available CUDA accelerator:
> Info) [0] Quadro 2000         4 SM_2.1 @ 1.25 GHz, 1.0GB RAM, KTO, OIO, ZCP
> Warning) Detected X11 'Composite' extension: if incorrect display occurs
> Warning) try disabling this optional X server feature.
> XRequest.137: BadWindow (invalid Window parameter) 0x4200091
> Info) OpenGL renderer: ErrorUnknown
> Info)   Features: STENCIL
> Info)   GLSL rendering mode is NOT available.
> Missing separate debuginfo for /usr/local/lib/vmd/
> Info) Dynamically loaded 2 plugins in directory:
> Info) /usr/local/lib/vmd/plugins/LINUXAMD64/molfile
> vmd >
> I read a few of the posts, which sort of conclude to update the graphics
> card driver. But if I had that problem, I should not have had VMD working
> fine before the Red Hat updates. Any insight will be helpful. I tried

your conclusion is likely wrong. it usually are the updates
that mess up the installation, particularly if they update
the X server, since red hat doesn't distribute the binary
only driver from nvidia, only the dri/mesa derived ones.
those two have files that collide. the best chance is
probably to re-install the nvidia driver.


> reinstalling VMD as well. Thank you!
> -Shalabh

Dr. Axel Kohlmeyer
College of Science and Technology
Temple University, Philadelphia PA, USA.