[vtkusers] Xlib: extension "GLX" missing

[BERK GEVECI]

Rick,

It sounds like glx is not turned on in the XFree configuration
file (assuming you are using XFree). How you turn it on depends
on whether you are using XFree3.x.x or XFree4.x. Usually, there
is an entry like 
Load "glx"
in the XF86Config file, if that is disabled with a comment like
# Load "glx"

delete the comment and restart X.
A good source of information for configuring NVidia cards on XFree4 is
http://linuxpower.com/display.php?id=189

If you are still using XFree3.x, I recommend that you upgrade and
also download the latest nVidia drivers. There is significant performance
change.

Good luck,
Berk

On Thu, 10 Aug 2000, Richard Goldberg wrote:

> Hi all,
> 
> I have been able to install vtk on several sgi's and linux boxes with no
> problem. However, there is one linux box that is giving me trouble.
> 
> Mesa, tcl/tk are both installed. Vtk was compiled on another linux box
> and installed on this one.
> 
> When I run "vtk", the vtk window pops up, but I get this error on the
> command line
> 	NV: could not open control device /dev/nvidiactl, errno=2
> If I try to run any of the vtk examples or any of our own code (that
> works on all the other machines) I get:
> 	tcsh% vtk cutter.tcl cb3.vtk ~bsimmons/outone.vtk
> 	NV: could not open control device /dev/nvidiactl, errno=2
> 	Xlib:  extension "GLX" missing on display "hadrian:10.0".
> 	Xlib:  extension "GLX" missing on display "hadrian:10.0".
> 	ERROR: In vtkMesaRenderWindow.cxx, line 152
> 	vtkMesaRenderWindow (0x80e3390): Could not find a decent visual
>  
> 	Segmentation fault
> 
> Sounded to me like there was a problem with the mesa instalation, but I
> reinstalled it and still have no luck.
> 
> Any pointers would be appriciated.
> 
> Thanks