xorg.conf for Dual-head Xinerama on FC2T3

[Tony Perrie]

I got working dual head on fc2t3.  At the end of this email is my
xorg.conf file for the configuration.  I have a Radeon 7200 in my AGP
slot, and a Radeon 7000 PCI card at "PCI:2:14:0" on an Asus CUSL2 mother
board.

I determined the "PCI:2:14:0" value by doing the following: 

sudo X -configure

That seemed to find both of my cards.  I then pasted the "PCI:2:14:0"  
into the "Videocard1" section of the dual-head xorg.conf generated by the
Gnome display manager, and it worked like a charm.  Here is a screenshot
of the results:

http://uberh4x0r.org/~hoyhoy/fc2t3.gif

Is this a Gnome problem that it can't recognize where the PCI video card
is on the bus?  Gnome tried to use "PCI:1:0:0", and by default gave me a
single 640x480 display on Videocard0.  That was quite a shock since I 
should have 3200x1200 of usable X display area.  

Regards, 

Tony

# Xorg configuration created by system-config-display
#
# Author:      Tony Perrie
#
# Description: xorg configuration file for a 3200x1200 
#              Xinerama desktop under Fedora Core 2 (Test 3)
#              using a Radeon 7200 in the AGP slot and a Radeon
#              7000 in the fourth PCI slot on an Asus CUSL2
#              Pentium III-based system. 
#
# Date:        5/13/2004
#

Section "ServerLayout"
	Identifier     "Multihead layout"
	Screen      0  "Screen0" RightOf "Screen1"
	Screen      1  "Screen1" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
	Option	    "Xinerama" "on"
	Option	    "Clone" "on"
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"
	Load  "dri"
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" "pc105"
	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" "yes"
EndSection

Section "Monitor"

 ### Uncomment if you don't want to default to DDC:
 ### Uncomment if you don't want to default to DDC:
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Sony CPD-G500"
 ### Uncomment if you don't want to default to DDC:
	HorizSync    30.0 - 121.0
	VertRefresh  48.0 - 160.0
	Option	    "dpms"
EndSection

Section "Monitor"
	Identifier   "Monitor1"
	VendorName   "Monitor Vendor"
	ModelName    "Samsung SyncMaster 213T"
	HorizSync    30.0 - 81.0
	VertRefresh  56.0 - 85.0
	Option	    "dpms"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "radeon"
	VendorName  "ATI"
	BoardName   "ATI Radeon 7000"
EndSection

Section "Device"
	Identifier  "Videocard1"
	Driver      "radeon"
	VendorName  "ATI"
	BoardName   "ATI Radeon 7200"
	BusID       "PCI:2:14:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1600x1200"
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen1"
	Device     "Videocard1"
	Monitor    "Monitor1"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1600x1200"
	EndSubSection
EndSection

Section "DRI"
	Group        0
	Mode         0666
EndSection