XF86Config-4 on iMac G3 Rev. B

["Brian C" <brianwc@berkeley.edu>]

Hi,

I did a net install of Debian on an old iMac G3 Rev. B 
with 6MB of vRAM and the ATI Rage Pro card. It has 64MB of 
RAM. X does not start. It seems to want to start, but the 
gdm login screen never appears. I'm wondering if perhaps X 
simply will not run with only 64MB of RAM. At first I was 
trying to get 1024x768 at a Depth of 24, but even scaling 
back to 800x600 at a depth of 16 gives the same result: 
nothing. Here's my XF86Config-4, if there are other places 
I should be looking for errors, let me know. Thanks for 
any tips:

# XF86Config-4 (XFree86 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 XF86Config-4 
manual page.
# (Type "man XF86Config-4" at the shell prompt.)
#
# This file is automatically updated on xserver-xfree86 
package upgrades *only*
# if it has not been modified since the last upgrade of 
the xserver-xfree86
# package.
#
# If you have edited this file but would like it to be 
automatically updated
# again, run the following commands as root:
#
#   cp /etc/X11/XF86Config-4 /etc/X11/XF86Config-4.custom
#   md5sum /etc/X11/XF86Config-4 
> /var/lib/xfree86/XF86Config-4.md5sum
#   dpkg-reconfigure xserver-xfree86

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/Speedo"
	FontPath	"/usr/lib/X11/fonts/100dpi"
	FontPath	"/usr/lib/X11/fonts/75dpi"
EndSection

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

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"keyboard"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xfree86"
	Option		"XkbModel"	"macintosh"
	Option		"XkbLayout"	"us"
EndSection

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

Section "Device"
	Identifier	"Generic Video Card"
	Driver		"ati"
#	Option		"UseFBDev"		"true"
EndSection

Section "Monitor"
	Identifier	"Generic Monitor"
	HorizSync	28-50
	VertRefresh	43-75
	Option		"DPMS"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"Generic Video Card"
	Monitor		"Generic Monitor"
	DefaultDepth	16	
	SubSection "Display"
		Depth		1
		Modes		"800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth		4
		Modes		"800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth		8
		Modes		"800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth		15
		Modes		"800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth		16
		Modes		"800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth		24
		Modes		"1024x768" "800x600" "640x480"
	EndSubSection
EndSection

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

Section "DRI"
	Mode	0666
EndSection

Brian