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Created attachment 706941 [details]
Screenshot of the error

Description of problem:
we are using a Graphical Desktop with XRDP on our Rhel 6.4 server. After a recent update of the package tigervnc-server we experience problems with opengl.

When i use NX or "ssh -X" to run a program which uses opengl, it works without any problems. When i use xrdp to run the program it gives an error. The error is "Error: couldn't find RGB GLX visual or fbconfig" 

I solved the problem by downgrading tigervnc-server. The version that doesn't work is 1.1.0, the version that works is 1.0.90.

Version-Release number of selected component (if applicable):
1.1.0

How reproducible:
Use XRDP (http://pkgs.org/centos-6-rhel-6/epel-x86_64/xrdp-0.5.0-0.13.el6.x86_64.rpm.html) to connect to a graphical desktop and run glxinfo/glxgears etc. Version 1.0.90 works without errors. Version 1.1.0 gives an error.

Steps to Reproduce:
1. Install graphical desktop (with opengl support)
2. install XRDP 
3. connect with rdp-client and run glxinfo
  
Actual results:
Error: couldn't find RGB GLX visual or fbconfig

Expected results:
info about opengl.

Additional info:

Verified bug in another CentOS 6.4 installation. Fixed by downgrading.

*** This bug has been marked as a duplicate of bug 950708 ***

Just hit this same issue with RHEL 6.5.
I also resolved by returning to the previous version of tigervnc-server
Thanks to whomever found this issue and the fix!