I installed RH 7.1 (GNOME desktop) and tried to configure Xinerama 
per the HOWTO.  I get normal operation on the first monitor, but only 
the low-res gray screen on the second.  But the cursor will go to it 
(as an "X", but buttons cause no effect).  I'm attaching a .gz of my 
XF86Config-4 and the /var/log file.

Did I miss a parameter?

Appreciations,
Gene