In general, you would be better off with a current desktop version of Linux, like Ubuntu or Fedora, than a server version of Linux, like RHEL. The software graphics drivers in the server editions are conservatively updated and are often buggy for 3D graphics. As Tom said, you need to install the graphics driver from the card's vendor. If you have Intel graphics, my condolences -- you can try the newest version of Linux you can find, but you would be better off replacing the laptop with one that has AMD/ATI or NVIDIA graphics, and if it's a desktop, putting in an AMD/ATI or NVIDIA graphics card. In a similar vein, if your graphics card is ancient and not recognized, then maybe it's time to spend $20-$50 for a newer card :-) Good luck, Greg On 06/15/2011 11:34 AM, Tom Goddard wrote:

This is a graphics driver bug. Maybe you have no graphics driver installed and it is using an old buggy version of Mesa to do the 3d graphics. The best solution is to install a graphics driver from the maker of your card Nvidia or AMD/ATI.

Tom

...

Folks,

I recently upgraded my LINUX to RHEL 5 (its an old machine and RHEL 6 did not recognize my old graphics card so I settled for RHEL5). I have installed xterm (eg yum install xerm). I downloaded Chimera 1.5.3 build 33475 2011-5-24 17:23

When I read in a PDB file and then try to display a surface, the calculation finishes but the display of the surface is fragmented with only a few of the triangular surface components displayed. The issue is not confined to a particular PDB.

A windows version 1.5.3 works nominally with respect to surface display.

So I am wondering if I have my xterm properly installed.

Can you suggest some things for me to examine?

Thanks

Starr

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