[Chimera-users] Chimera-1.5.3 on RHEL 5 Linux workstation does not display surface

Greg Couch gregc at cgl.ucsf.edu
Wed Jun 15 11:51:50 PDT 2011

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,


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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