[Newbie]it doesn't work: XFree86_4.2 + FreeBSD + Trident9525/DVD

[newbie@XFree86.Org (UltraVives)]

hi,

i  recently install the XFree86_4.2 in my FreeBSD_4.5 but it doesn't work. The X server can start up, the x windows can pop up but the screen is always unstable. what's wrong with it? is it a bug? My box is Toshiba Satellite with Trident9525/DVD and the monitor is Internal 800x600 LCD, TFT12"1.

here is my xf86config.new:

Section "ServerLayout"
	Identifier     "XFree86 Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	RgbPath      "/usr/X11R6/lib/X11/rgb"
	ModulePath   "/usr/X11R6/lib/modules"
	FontPath     "/usr/X11R6/lib/X11/fonts/misc/"
	FontPath     "/usr/X11R6/lib/X11/fonts/Speedo/"
	FontPath     "/usr/X11R6/lib/X11/fonts/Type1/"
	FontPath     "/usr/X11R6/lib/X11/fonts/CID/"
	FontPath     "/usr/X11R6/lib/X11/fonts/75dpi/"
	FontPath     "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
	Load  "extmod"
	Load  "glx"
	Load  "dri"
	Load  "dbe"
	Load  "record"
	Load  "xtrap"
	Load  "speedo"
	Load  "type1"
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "keyboard"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/mouse"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
	HorizSync    31.5-37.9	
	VertRefresh  50-90
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option     "SWcursor"           	# [<bool>]
        #Option     "PciRetry"           	# [<bool>]
        #Option     "NoAccel"            	# [<bool>]
        #Option     "SetMClk"            	# <freq>
        #Option     "MUXThreshold"       	# <i>
        #Option     "ShadowFB"           	# [<bool>]
        #Option     "Rotate"             	# [<str>]
        #Option     "VideoKey"           	# <i>
        #Option     "NoMMIO"             	# [<bool>]
        #Option     "NoPciBurst"         	# [<bool>]
        #Option     "MMIOonly"           	# [<bool>]
        #Option     "CyberShadow"        	# [<bool>]
        #Option     "CyberStretch"       	# [<bool>]
        #Option     "XvHsync"            	# <i>
        #Option     "XvVsync"            	# <i>
        #Option     "XvBskew"            	# <i>
        #Option     "XvRskew"            	# <i>
	Identifier  "Card0"
	Driver      "trident"
	VendorName  "Trident"
	BoardName   "Cyber 9525/DVD"
	BusID       "PCI:1:0:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	SubSection "Display"
		Depth     1
	EndSubSection
	SubSection "Display"
		Depth     4
	EndSubSection
	SubSection "Display"
		Depth     8
	EndSubSection
	SubSection "Display"
		Depth     15
	EndSubSection
	SubSection "Display"
		Depth     16
	EndSubSection
	SubSection "Display"
		Depth     24
	EndSubSection
EndSection