virtual frame buffer

OK, this is a long shot since the kernel virtual frame buffer isn't 
really part of the fbdev development....  (that I know of?  Maybe it is....)

Is it possible to use the virtual frame buffer as a real device?  The 
one that says 'for testing only' in the menuconfig?

I am trying to set up a graphical system on an embedded system with no 
video hardware at all.  I am using nano-x (http://www.microwindows.com) 
The output is into the virtual frame buffer, and then I am trying to use 
vnc to remote the display to another computer.

The nano-x client apps can see mouse events from vncviewer, but 
vncviewer only shows total blackness.

Is the virtual frame buffer just a black hole? Or should vnc work with 
it?  IIRC vnc reads the video memory and then sends it to the viewer.  
Obviously, if the virtual frame buffer is just a black hole that won't 
work....

 From looking at the source, it seems like the vfb really allocates 
memory for framebuffer use.... And vncserver is mmap'ing it correctly.  
So that would lead me to believe that it should work....

--Yan


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