[jpstewart]

Before enabling xinerama i can run opengl software in the primary and secondary monitors.
Now only can be done in the primary display.

Is possible to enable opengl en both monitors having xinerama running ?.

As far as I know, OpenGL and Xinerama are mutually exclusive.  You can have one or the other but not both.

SGI also had its OpenGL MultiPipe software that would allow you to use OpenGL on multiple monitors while maintaining the ability to drag windows between them (like with Xinerama).  But as far as I know it was only supported on later/larger hardware such as the Onyx machines and VPro-equipped systems.  But I'm no expert on it, so you might want to look into OpenGL MultiPipe anyway.