VMD-L Mailing List

From: Tim Travers (tstravers_at_gmail.com)
Date: Wed May 26 2010 - 16:27:01 CDT

Thanks for your reply John. I just tested Fedora 13, which should be using
the
latest graphics drivers for Linux Intel (2.11.*), and it now seems to work
as long
as I use the GLSL Rendermode. I think this is good enough for now, so I
think
I'll stick with this and just upgrade to F13.

Thanks again,
Tim

On Wed, May 26, 2010 at 10:46 AM, John Stone <johns_at_ks.uiuc.edu> wrote:

>
> Hi,
> The problems you're having are due to bugs in the Intel graphics drivers.
> In order to get past these issues, you'll need to find a different graphics
> driver version that fixes these problems. The Intel graphics drivers for
> Linux have been widely known to have problems for several years now.
> To be honest, it amazes me that even after all of the time and complaints
> that have gone by that very little seems to have changed in regards to
> these kinds of problems with their Linux drivers. Both NVIDIA and AMD
> have much more reliable graphics drivers on Linux, and they both produce
> GPUs that are much more featureful and perform better, so if you have
> the means to upgrade your hardware to a different GPU or graphics
> chipset, that is what I would recommend first and foremost. Time is too
> precious to waste on non-functioning drivers and low performance hardware.
> If you can't get upgrade the hardware and you are unable to obtain a driver
> that fixes the problem, then I would suggest sticking with Windows, as
> Intel seems to put far more effort into making their Windows drivers
> usable.
>
> Cheers,
> John Stone
> vmd_at_ks.uiuc.edu
>
> On Tue, May 25, 2010 at 06:29:09PM -0400, Tim Travers wrote:
> > Good afternoon,
> >
> > Sorry for posting twice, just in case the previous one with attached
> > screenshots
> > is too large to be posted.
> > I've been having problems with color rendering when using VMD on a
> laptop
> > with an Intel graphics card. This only occurs when used with linux
> (I've
> > tested
> > Fedora 11, Fedora 12, and Ubuntu 10.04), but not when using Windows
> Vista
> > on the same laptop. The main problem is that the color rendering for
> the
> > licorice
> > and CPK drawing methods don't work right.
> >
> > I can send screenshots if needed. Strangely, for the licorice
> > drawing, just changing
> > the sphere resolution can also cause differences in the color
> > rendering with, for instance,
> > some bonds changing color from blue to red.
> > When using CPK drawing, some C-C bonds are shown in red, some in dark
> > blue, and
> > others in the normal cyan for name coloring.
> >
> > I've googled this for some time now, and couldn't find any resolution.
> > Just to note,
> > I also have this problem with PyMOL's stick rendering (its version of
> > licorice). Again,
> > both work fine on Windows but not on the linux distros I've tested so
> far.
> > I'm not sure
> > if this'll be helpful, but here's the output of glxinfo | grep -i
> opengl:
> >
> > OpenGL vendor string: Tungsten Graphics, Inc
> > OpenGL renderer string: Mesa DRI Intel(R) 965GM GEM 20091221 2009Q4
> > OpenGL version string: 2.1 Mesa 7.7.1
> > OpenGL shading language version string: 1.20
> >
> > Also, I've tried the three different rendermodes in VMD, to no avail.
> Is
> > there some
> > X setting that needs to be maybe tweaked for Intel graphics cards?
> >
> > Thanks for any help on this problem.
> >
> > Thanks again,
> > Timothy
>
> --
> NIH Resource for Macromolecular Modeling and Bioinformatics
> Beckman Institute for Advanced Science and Technology
> University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
> Email: johns_at_ks.uiuc.edu Phone: 217-244-3349
> WWW: http://www.ks.uiuc.edu/~johns/ <http://www.ks.uiuc.edu/%7Ejohns/>
> Fax: 217-244-6078
>