From: Albert (
Date: Wed Dec 03 2014 - 15:24:52 CST

Hi John:

Thanks a lot for the advices.

I reinstalled my blumbee and optimus driver for nvidia. It works fine
now. It seems that my udpate library break blumbee and optimus.


On 12/03/2014 10:11 PM, John Stone wrote:
> Hi,
> The VMD output you have included below seems to indicate that
> you're trying to run VMD using VirtualGL. The CUDA error indicates
> that you're running VMD on a machine that has a very out-of-date
> NVIDIA driver of some kind. You can check what the driver version is
> like this:
> cat /proc/driver/nvidia/version
> The next warning about the "Composite" extension is non-fatal, but
> indicates that the X-windows configuration has the composite extension
> turned on, and generally I would recommend that it be disabled because
> it has a bad track history of interfering with stereoscopic display
> and other advanced OpenGL features.
> The final errors are the ones that are more serious. These errors appear
> to be VirtualGL errors and they are complaining about being unable to load
> an OpenGL software rasterization driver of some kind "swrast". It seems
> that your system may have a set of mismatched OpenGL drivers being used by
> VirtualGL and VMD, and that this is causing problems.
> Can you comment further about how you are running VMD on this system?
> All of those "VGL" messages you see are not part of VMD, they must have
> to do with your particular host machine and its windowing system, and
> I'm guessing they are related to VirtualGL.