[ydl-gen] problem with dual head configuration on 4.0.91

[Richardson, Jeremiah]

I have a Dual 2.7 GHz G5 PowerMac that is dual booting Mac OS X and
Yellow Dog Linux 4.0.91.  I am trying to configure the machine to have
two heads.  The heads are NEC MultiSync LCD 2010X's and the graphics
card is a dual output ATI Radeon 9600 Pro.  Both of these appear to be
supported; however, I am still having issues getting it working.  I
first tried to set up the dual head configuration starting with System
Settings -> Display and picking things through there. Next, I tried
basing my /etc/X11/XF86Config file on the one seen here
http://cvs.terraplex.com/~owen/xorg.conf.  Finally, I tried to follow
the instructions found here
http://www.yellowdoglinux.com/support/solutions/ydl_4.0/dual-head.shtml.
The result from all three was the same.  The second monitor remained a
blank white screen during all three of these tests.  It also remains
white when logging out and booting up.  The dual head configuration does
work under Mac OS X and I have tried switching the cables and adapters
just to be safe.  Posted below is my /etc/X11/XF86Config file.  Any help
anyone could give me would be greatly appreciated.  Thank you.

Jeremiah Richardson

# Xorg configuration created by system-config-display

Section "ServerLayout"
        Identifier     "Multihead layout"
        Screen      0  "Screen0" 0 0
        Screen      1  "Screen1" RightOf "Screen0"
        InputDevice    "Mouse0" "CorePointer"
        InputDevice    "Keyboard0" "CoreKeyboard"
        Option      "Xinerama" "on"
        Option      "Clone" "off"
EndSection

Section "Files"

# RgbPath is the location of the RGB database.  Note, this is the name
of the 
# file minus the extension (like ".txt" or ".db").  There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
        RgbPath      "/usr/X11R6/lib/X11/rgb"
        FontPath     "unix/:7100"
EndSection

Section "Module"
        Load  "dbe"
        Load  "extmod"
        Load  "fbdevhw"
        Load  "glx"
        Load  "record"
        Load  "freetype"
        Load  "type1"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
#       Option  "Xleds"         "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
#       Option  "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults).  For example, for a non-U.S.
# keyboard, you will probably want to use:
#       Option  "XkbModel"      "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
#       Option  "XkbModel"      "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
#       Option  "XkbLayout"     "de"
# or:
#       Option  "XkbLayout"     "de"
#       Option  "XkbVariant"    "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
#       Option  "XkbOptions"    "ctrl:swapcaps"
# Or if you just want both to be control, use:
#       Option  "XkbOptions"    "ctrl:nocaps"
#
        Identifier  "Keyboard0"
        Driver      "keyboard"
        Option      "XkbModel" "macintosh"
        Option      "XkbLayout" "us"
EndSection

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "IMPS/2"
        Option      "Device" "/dev/input/mice"
        Option      "ZAxisMapping" "4 5"
        Option      "Emulate3Buttons" "no"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "NEC MultiSync LCD2010X"
        HorizSync    31.0 - 80.0
        VertRefresh  56.0 - 85.0
        Option      "dpms"
EndSection

Section "Monitor"
        Identifier   "Monitor1"
        VendorName   "Monitor Vendor"
        ModelName    "NEC MultiSync LCD2010X"
        HorizSync    31.0 - 80.0
        VertRefresh  56.0 - 85.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "radeon"
        VendorName  "Videocard vendor"
        BoardName   "ATI Radeon 9600 Pro"
#       Option      "UseFBDev" "true"
EndSection

Section "Device"
        Identifier  "Videocard1"
        Driver      "radeon"
        VendorName  "Videocard Vendor"
        BoardName   "ATI Radeon 9600 Pro"
        BusID       "PCI:240:16:0"
        Screen      1
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     16
        SubSection "Display"
                Viewport  0 0
                Depth     16
                Modes    "1280x1024"
        EndSubSection
EndSection

Section "Screen"
        Identifier "Screen1"
        Device     "Videocard1"
        Monitor    "Monitor1"
        DefaultDepth     16
        SubSection "Display"
                Viewport   0 0
                Depth     16
                Modes    "1280x1024"
        EndSubSection
EndSection

Section "DRI"
        Group        0
        Mode         0666
EndSection