[debian] probleme Xorg

Bonjour a tous,
voila apres de nombreuse recherche et beaucoup de temps perdu, je me decide a poster.

preambule :
j'ai une debian sarge, j'ai mis xorg a la place de xfree86.
j'ai une X1600 de chez ati.
j'ai deux écrans relié à cette carte

probleme :

j'ai configurer mon xorg.conf de facon a ce que chaque ecran soit independant mais que la souris passe de l'un a l'autre (multi-head, je crois que c'est comme ca que ca s'apel)
lorsque je passe a la console (Ctrl,Alt,F1 par exemple ) et que je veux revenir a l'interface graphique, ca plante .
je precise que j'utilise les drivers fglrx parce que rien d'autre ne passe.
pareil, lorsque je lance xawtv, l'écran devient noir puis plus rien, enfin j'entend juste le son.
je ne sais vraiment plus quoi faire.
si j'ai bien compris quand meme ca viendrai des drivers ou d'une option que je n'aurai pas ou mal configurer. d'avance merci.

voila mon xorg.conf:

# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the /etc/X11/xorg.conf manual page.
# (Type "man /etc/X11/xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following commands:
#
#   cp /etc/X11/xorg.conf /etc/X11/xorg.conf.custom
#   sudo sh -c 'md5sum /etc/X11/xorg.conf >/var/lib/xfree86/xorg.conf.md5sum'
#   sudo dpkg-reconfigure xserver-xorg

Section "Files"
	FontPath	"unix/:7100"			# local font server
	# if the local font server has problems, we can fall back on these
	FontPath	"/usr/lib/X11/fonts/misc"
	FontPath	"/usr/lib/X11/fonts/cyrillic"
	FontPath	"/usr/lib/X11/fonts/100dpi/:unscaled"
	FontPath	"/usr/lib/X11/fonts/75dpi/:unscaled"
	FontPath	"/usr/lib/X11/fonts/Type1"
	FontPath	"/usr/lib/X11/fonts/CID"
	FontPath	"/usr/lib/X11/fonts/100dpi"
	FontPath	"/usr/lib/X11/fonts/75dpi"
        # paths to defoma fonts
	FontPath	"/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
	FontPath	"/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
EndSection

Section "Module"
	Load	"bitmap"
	Load	"dbe"
	Load	"ddc"
	Load	"dri"
	Load	"extmod"
	Load	"freetype"
	Load	"glx"
	Load	"int10"
	Load	"record"
	Load	"type1"
	Load	"vbe"
EndSection

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"keyboard"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"fr-latin9"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"Emulate3Buttons"	"true"
	Option		"ZAxisMapping"		"4 5"
EndSection
Section "InputDevice"
	Identifier	"Generic Mouse"
	Driver		"mouse"
	Option		"SendCoreEvents"	"true"
	Option		"Device"		"/dev/psaux"
	Option		"Protocol"		"ImPS/2"
	Option		"Emulate3Buttons"	"true"
	Option		"ZAxisMapping"		"4 5"
EndSection

Section "Device"
	Identifier	"ATI0"
	Driver		"fglrx"
	BusID		"PCI:1:0:0"
	Screen		0
EndSection

Section "Device"
	Identifier	"ATI1"
	Driver		"fglrx"
	BusID		"PCI:1:0:0"
	Screen 		1
EndSection

Section "Monitor"
	Identifier	"Ecran0"
	Option		"DPMS"
EndSection

Section "Monitor"
	Identifier	"Ecran1
	Option		"DPMS"
EndSection

Section "Screen"
	Identifier	"CRT0"
	Device		"ATI0"
	Monitor		"Ecran0"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
		Modes		"1280x1024" "1024x768" "800x600"
	EndSubSection
EndSection

Section "Screen"
	Identifier	"CRT1"
	Device 		"ATI1"
	Monitor		"Ecran1"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
		Modes		"1024x768" "800x600"
	EndSubSection
EndSection


Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"CRT0"
	Screen		"CRT1" LeftOf "CRT0"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
	InputDevice	"Generic Mouse"
EndSection

Section "DRI"
	Mode	0666
EndSection

En vous remerciant d'avance
Frégis