Can't change screen resolution G3 + YDL 3.0

[Simon Morris]

All,

Successfully installed YDL 3.0 onto a Powerbook G3 (Old World).

After the install the screen resolution is stuck on 640x480.

Although we can change the depth of the screen to use more colours the
resolution is stuck.

The label on the bottom of the Powerbook tells me I have a 4MB Video
card. 

I've included my /etc/X11/XF86config file below... can anyone offer
advice on which driver to use for this.


Thanks


Simon

-------------------

Contents of XF86Config

# XFree86 4 configuration created by redhat-config-xfree86

Section "ServerLayout"

	#
	Identifier     "Anaconda Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"

# 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  "dri"
	Load  "glx"
	Load  "record"
	Load  "freetype"
	Load  "type1"
EndSection

Section "InputDevice"

#	Option	"AutoRepeat"	"500 5"
# when using XQUEUE, comment out the above line, and uncomment the
# following line
#	Option	"Protocol"	"Xqueue"
# 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"
	#Option	"XkbOptions"	""
	Identifier  "Keyboard0"
	Driver      "keyboard"
	Option	    "XkbRules" "xfree86"
	Option	    "XkbModel" "macintosh"
	Option	    "XkbLayout" "us"
	#Option	"XkbVariant"	""
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    "Apple PowerBook G3 (pre-1999)"
	DisplaySize  11	9
	HorizSync    119.0 - 119.0
	VertRefresh  196.0 - 196.0
	Option	    "dpms"
EndSection

Section "Device"

	# no known options
        #BusID
	Identifier  "ATI Mach64"
	Driver      "ati"
	VendorName  "ATI Mach64"
	BoardName   "ATI Mach64"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "ATI Mach64"
	Monitor    "Monitor0"
	DefaultDepth     8
	SubSection "Display"
		Depth     15
		Modes    "1024x768" "832x624" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth     8
		Modes    "640x480"
	EndSubSection
	SubSection "Display"
		Depth     24
		Modes    "640x480"
	EndSubSection
	SubSection "Display"
		Depth     16
		Modes    "640x480"
	EndSubSection
EndSection

Section "DRI"
	Mode         0666
EndSection