Xorg.conf iBook G4 / 1.42 14 inch

Section "Device"
   Identifier   "Radeon9550"
   Driver      "radeon"
   BusID      "PCI:0:16:0"
   Option "NoInt10" "true"
EndSection

Section "Monitor"
   Identifier   "StandardMonitor"
   Option      "DPMS"
# 1024x768 59.92 Hz (CVT 0.79M3) hsync: 47.82 kHz; pclk: 63.50 MHz
Modeline "1024x768_60.00" 63.50 1024 1072 1176 1328 768 771 775 798 -hsync +vsync
# 800x600 59.86 Hz (CVT 0.48M3) hsync: 37.35 kHz; pclk: 38.25 MHz
Modeline "800x600_60.00" 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync
# 640x480 59.38 Hz (CVT 0.31M3) hsync: 29.69 kHz; pclk: 23.75 MHz
Modeline "640x480_60.00" 23.75 640 664 720 800 480 483 487 500 -hsync +vsync
Option "PreferredMode" "1024x768_60.00"
EndSection

Section "Screen"
   Identifier   "StandardScreen"
   Device      "Radeon9550"
   Monitor      "StandardMonitor"
   DefaultDepth   24

   SubSection      "Display"
      Depth      8
      Modes      "1024x768" "800x600" "640x480"
   EndSubSection
   SubSection      "Display"
      Depth      15
      Modes      "1024x768" "800x600" "640x480"
   EndSubSection
   SubSection "Display"
      Depth        16
      Modes    "1024x768" "800x600" "640x480"
   EndSubSection
   SubSection   "Display"
      Depth      24
      Modes      "1024x768" "800x600" "640x480"
   EndSubSection
EndSection

Section      "ServerLayout"
   Identifier   "Default Layout"
   Screen "StandardScreen"
EndSection

Section "DRI"
   Mode      0666
EndSection

To download:
wget http://mac.linux.be/files/xorg/ibook7.txt