I'm posting for a friend. He has some problems with his Retina Z2.
He has installed the X11R6.XamigaRetina-beta on his system. When
he starts X, the X server tries to read some files in
/usr/local/X11R6/lib/xinit/Retinamondef or so. These seem to be some
kind of monitor description files. It is a Smile 15'' monitor with
horizontally 30-60kHz and vertically 50-90Hz. Since there is no
documentation at all, the question is how to build a config file
for this monitor and the screenmodes.

Who can help him with the right files resp. hints how to setup
X properly?

Ciao ... Heiko