Xorg.conf PowerMac G4/1GHz GeForce 4 MX with Apple Studio Display 17''

This is a working file for Debian Lenny:

Section "Device"
Identifier "Configured Video Device"
BusID   "PCI:0:16:0"
Driver  "nv"
EndSection

Section "Monitor"
    Identifier    "StudioDisplay17"
    Option "DPMS"
    HorizSync   30-80
    VertRefresh   50-100
EndSection

Section "Screen"
    Identifier    "Default Screen"
    Monitor        "StudioDisplay17"
    Device        "Configured Video Device"
        DefaultDepth    24
           SubSection       "Display"
             Depth            24
             Modes             "1280x1024" "1024x768" "800x600" "640x480"
           EndSubSection
           SubSection        "Display"
             Depth            16
             Modes             "1280x1024" "1024x768""800x600" "640x480"
           EndSubSection
SubSection "Display"
      Depth      15
      Modes      "1280x1024" "1024x768" "800x600" "640x480"
   EndSubSection
SubSection "Display"
      Depth      8
      Modes      "1280x1024" "1024x768" "800x600" "640x480"
   EndSubSection
SubSection "Display"
      Depth      4
      Modes      "1280x1024" "1024x768" "800x600" "640x480"
   EndSubSection
SubSection "Display"
      Depth      1
      Modes      "1280x1024" "1024x768" "800x600" "640x480"
   EndSubSection
EndSection

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

Section "DRI"
   Mode   0666
EndSection

To download this file:
wget http://mac.linux.be/files/xorg/g4_1.txt

This might work for Lucid Lynx( not tested):

    Section "Device"
        Identifier "Configured Video Device"
        BusID   "PCI:0:16:0"
        Driver  "nouveau"
        Option "NoInt10" "true"
        EndSection

        Section "Monitor"
            Identifier    "StudioDisplay17"
            Option "DPMS"
            HorizSync   30-80
            VertRefresh   50-100
           # 1280x1024 59.89 Hz (CVT 1.31M4) hsync: 63.67 kHz; pclk: 109.00 MHz
           Modeline "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync

           # 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" "1280x1024_60.00"    
EndSection

        Section "Screen"
            Identifier    "Default Screen"
            Monitor        "StudioDisplay17"
            Device        "Configured Video Device"
                DefaultDepth    24
                   SubSection       "Display"
                     Depth            24
                     Modes             "1280x1024" "1024x768" "800x600" "640x480"
                   EndSubSection
                   SubSection        "Display"
                     Depth            16
                     Modes             "1280x1024" "1024x768""800x600" "640x480"
                   EndSubSection
        SubSection "Display"
              Depth      15
              Modes      "1280x1024" "1024x768" "800x600" "640x480"
           EndSubSection
        SubSection "Display"
              Depth      8
              Modes      "1280x1024" "1024x768" "800x600" "640x480"
           EndSubSection
        SubSection "Display"
              Depth      4
              Modes      "1280x1024" "1024x768" "800x600" "640x480"
           EndSubSection
        SubSection "Display"
              Depth      1
              Modes      "1280x1024" "1024x768" "800x600" "640x480"
           EndSubSection
        EndSection

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

        Section "DRI"
           Mode   0666
        EndSection 

To download this file:
wget http://mac.linux.be/files/xorg/g4_2.txt