GRX compile and install went fine; link with user program went fine.  Using 'svgalib' works (only certain resolutions, but I'll save discussion for another thread).  Using 'linuxfb' results in:
 
"GrSetMode: could not find suitable video driver"
 
I tried both as user 'root' and as other: same error.  'lfbinfo' (run both as 'root' and as other) yields:
 
"Can't open /dev/fb0"
 
I checked that /dev/fb0 *does* exist (and other various /dev/fb#).  Found a reference in GRX mailing list archive that framebuffer support might not be enabled.  How do I enable framebuffer support on Linux?  XFree86 config?  Kernel recompile?  How?  How do I check if framebuffer support is already enabled?
 
Thanks in advance for any help anyone could provide.
Lance