hi mike,

this problem has been a real pain for years, and i've never been able to debug it. it would seem its some interaction with the shared gl libs, and the static glut libs compiled into tksurfer, as indicated by the combinations you list below.

fyi, if you havent seen this page already, its the known workarounds:

https://surfer.nmr.mgh.harvard.edu/fswiki/TksurferDisplayProblems

n.

On Wed, 2011-09-14 at 15:30 -0500, Michael Harms wrote:

Hi guys, So, the infamous tksurfer "sliver" display problem has reared its ugly head on some of the systems that I'm accessing, but in a manner that I can't make any sense of across the systems.

Machine 1: CentOS 5.5, 64 bit, FS versions 4.5.0 and 5.0.0 installed Sliver problem is present for v4.5.0, but not 5.0.0

Machine 2: RHEL Server 5.7, 64 bit, FS versions 4.5.0, 5.0.0, and 5.1.0 installed. Sliver problem is present for all 3 FS versions.

For both machines, I'm viewing the results in a VNC server, and 'glxgears' works fine in each.

The results of 'glxinfo' in a terminal within the VNC Server on each machine indicates that the same rendering is being used on each. i.e,. direct rendering: No OpenGL renderer string: Mesa GLX Indirect OpenGL version string: 1.2 (1.5 Mesa 6.5.1)

What I find particularly puzzling is that tksurfer works fine on FS v5.0.0 on Machine 1, but not FS 4.5.0 on the same machine. Yet the sliver problem is present for v5.0.0 on Machine 2, indicating that it isn't simply an FS version issue either.

I was wondering if the above behavior makes sense to someone, so that I can have something more concrete to take to the admins of each system.

thanks, -MH