Fedora 10, xrandr and inFocus projector

[Scott C. Frase]

Hi guys,
I'm a new user to the list with, what else, a sticky problem.  I have a 
dual boot MacBook Pro (2.33Ghz Core 2 Duo) that runs both Leopard and 
Fedora 10, x86-64 using ReFit as the boot loader.  I am trying to connect 
an InFocus projector to the DVI output of the Mac while running under Fedora.

The InFocus is connected this way:
MacBook external DVI output > DVI-VGA dongle > VGA - M1-DA cable > InFocus 
M1-DA connector

Unfortunately, the problem is that though xrandr sees the DVI-0 port as 
connected, the InFocus doesn't get the signal or spring to life through 
the setup listed above.

I've verified that the DVI-0 output works with a regular DVI cable 
connected to the DVI input on my Dell LCD panel.  So this means a 
digital signal is being output from the port.  Now, I've also verified 
that the DVI-0 output from Fedora does NOT work with the DVI-VGA dongle 
connected to the VGA input on the Dell.  When connected with the DVI-VGA 
setup listed above, xrandr sees that the InFocus is connected (shown 
below).  Also, Gnome sees the InFocus in the connected displays.

On the flipside, I've verified that the InFocus projector works 
using the DVI-VGA cable setup when booted from the Mac OS. So that's 
odd.

Since I can see the output while connected to the Dell's DVI input, I 
don't think this is a configuration issue.  But maybe Fedora just doesn't 
like the DVI-VGA dongle. I'm sure I could buy an M1-DA direct to DVI 
adapter and be done with it, but I'd rather save the $55 and figure out 
why the Mac sees the Infocus, but why Fedora has troubles.

Here is the output of xrandr:
[cm at cm ~]$ xrandr
Screen 0: minimum 320 x 200, current 2464 x 900, maximum 2720 x 1924
LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis) 
331mm x 207mm
    1440x900       60.0*+
    2048x1536      60.0
    1920x1440      60.0
    1856x1392      60.0
    1792x1344      75.0     60.0
    1600x1200      85.0     75.0     70.0     65.0     60.0
    1400x1050      74.8     60.0
    1280x1024      85.0     75.0     60.0
DVI-0 connected 1024x768+1440+0 (normal left inverted right x axis y axis) 
0mm x 0mm
    1024x768       60.0*+   85.0     75.1     75.0     70.1     60.0*
    1400x1050      60.0
    1280x1024      75.0     60.0
    1024x768_60.00   60.0
    1280x960       60.0
    1152x864       75.0
    832x624        74.6
    800x600        85.1     72.2     75.0     60.3     56.2
    640x480        85.0     72.8     75.0     72.8     75.0     60.0
    720x400        85.0
    640x400        85.1
    640x350        85.1
    0x0             0.0

Here is my xorg.conf:
Section "ServerLayout"
    Identifier     "Default Layout"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Synaptics Touchpad" "CorePointer"
EndSection

Section "Module"
    Load           "synaptics"
    Load           "extmod"
    Load           "dbe"
    Load           "glx"
EndSection

Section "InputDevice"
    Identifier     "Synaptics Touchpad"
    Driver         "synaptics"
    Option         "SendCoreEvents" "true"
    Option         "Device" "/dev/input/mice"
    Option         "Protocol" "auto-dev"
    Option         "SHMConfig" "true"
    Option         "LeftEdge" "10"
    Option         "RightEdge" "1200"
    Option         "TopEdge" "10"
    Option         "BottomEdge" "370"
    Option         "FingerLow" "10"
    Option         "FingerHigh" "20"
    Option         "MaxTapTime" "180"
    Option         "MaxTapMove" "220"
    Option         "SingleTapTimeout" "100"
    Option         "MaxDoubleTapTime" "180"
    Option         "LockedDrags" "off"
    Option         "MinSpeed" "1.10"
    Option         "MaxSpeed" "1.30"
    Option         "AccelFactor" "0.08"
    Option         "TapButton1" "1"
    Option         "TapButton2" "3"
    Option         "TapButton3" "2"
    Option         "RTCornerButton" "0"
    Option         "RBCornerButton" "0"
    Option         "LTCornerButton" "0"
    Option         "LBCornerButton" "0"
    Option         "VertScrollDelta" "20"
    Option         "HorizScrollDelta" "50"
    Option         "HorizEdgeScroll" "0"
    Option         "VertEdgeScroll" "0"
    Option         "VertTwoFingerScroll" "1"
    Option         "HorizTwoFingerScroll" "1"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
    Option         "XkbModel" "pc105"
    Option         "XkbLayout" "us"
EndSection

Section "Device"
 	Identifier  "ATI Technologies Inc M56P [Radeon Mobility X1600]"
         Driver      "radeon"
         Option      "backingstore" "true"
         Option      "RenderAccel" "true"
         Option      "AccelMethod" "EXA"
 	Option	    "Monitor-LVDS" "Internal Monitor"
 	Option	    "Monitor-DVI-0" "External DVI"
 	BusID       "PCI:1:0:0"
EndSection

Section "Monitor"
    Identifier     "Internal Monitor"
    HorizSync       30.0 - 110.0
    VertRefresh     50.0 - 150.0
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "External DVI"
     Modeline "1024x768_60.00"  108.88  1280 1360 1496 1712  1024 1025 1028 
1060  -HSync +Vsync
    Option "Enable" "true"
EndSection

Section "Screen"
 	Identifier "Screen0"
 	Device     "ATI Technologies Inc M56P [Radeon Mobility X1600]"
 	DefaultDepth     24
 	SubSection "Display"
 		Depth     24
                 Virtual 2720 1924 # <--- This is the newly added entry
 	EndSubSection
EndSection

Section "DRI"
 	Mode         0666
EndSection


help!
scott