[Chimera-users] remote session

Greg Couch gregc at cgl.ucsf.edu
Mon Apr 23 12:05:41 PDT 2012

The error is that the OpenGL library is looking for a NVidia-specific 
extention to the remote protocol and failing when it is not there.  That 
is a driver bug -- it shouldn't matter what graphics driver you have on 
either of the systems.  There are two things I'd do to try and fix it: 
(1) try updating the NVidia driver on the remote computer that is 
running chimera (not the computer displaying chimera), and (2) try 
uninstalling the NVidia driver on the remote computer, and reverting to 
the software implementation of OpenGL (mesa).  The first option is 
preferable if it works, because the proprietary (NVidia/AMD) drivers 
have been faster and less buggy than the mesa driver for most uses.

     Good luck,


On 04/20/2012 02:25 PM, Hernando J Sosa wrote:
> Hi
> I used to be able to run chimera remotely from a machine with an X- 
> windows server  (the one that comes with Cygwin in this case). But now 
> I get the following error:
> Xlib:  extension "NV-GLX" missing on display "localhost:10.0".
> X Error of failed request:  BadRequest (invalid request code or no 
> such operation)
>   Major opcode of failed request:  148 (GLX)
>   Minor opcode of failed request:  181 ()
>   Serial number of failed request:  12779
>   Current serial number in output stream:  12784
> I t does work fine if run directly from the computer  where chimera is 
> installed. Any idea what the problem could be?
> Thanks
> Server computer:
> Chimera v 1.5 (similar problem with 1.6)
> OS: Linux OpenSuse 11.3 64b
> Client computer:
> OS: Windows 7 64.
> Graphics: ATI Radeon HD 5450
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