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I'm not sure why this would happen but my best guess is that you don't have MESA available.

You can test this by running glxinfo which should give you a bunch of information about the OpenGL renderes available whether through hardware or software.

If this is empty or fails to even run as well, then you'll need to install Mesa, GLX, and/or hardware drivers for your video card.

You can try glxgears as well to prove your OpenGL rendering hardware/software pipeline is working.

I'm not sure why this would happen but my best guess is that you don't have MESA available.

You can test this by running glxinfo which should give you a bunch of information about the OpenGL renderes renderers available whether through hardware or software.

If this is empty or fails to even run as well, then you'll need to install Mesa, GLX, and/or hardware drivers for your video card.

You can try glxgears as well to prove your OpenGL rendering hardware/software pipeline is working.

I'm not sure why this would happen but my best guess is that you don't have MESA available.

You can test this by running glxinfo which should give you a bunch of information about the OpenGL renderers available whether through hardware or software.

If this is empty or fails to even run as well, then you'll need to install Mesa, GLX, and/or hardware drivers for your video card.

You can try glxgears as well to prove your OpenGL rendering hardware/software pipeline is working.

Also a shallow google search brings up this: http://www.ogre3d.org/forums/viewtopic.php?f=2&t=51227&start=0 where someone seemed to have the same problem because their X server GLX/DRI/OpenGL settings were messed up somehow.