G4 emac ATI xorg.conf

#tested on eMac, ATI 1.25 GHz
Section "InputDevice" 
Identifier "Generic Keyboard" 
Driver "kbd" 
Option "XkbRules" "xorg" 
Option "XkbModel" "pc105" 
Option "XkbLayout" "gb" 
Option "XkbOptions" "lv3:lwin_switch" 
EndSection

Section "InputDevice" 
Identifier "Configured Mouse" 
Driver "mouse" 
EndSection

Section "Device" 
Identifier "Configured Video Device" 
BusID "PCI:0:16:0" 
Option "UseFBDev" "true" 
Option "ConnectorTable" "100,1,0,1,108,2,0,1" 
Option "ReverseDDC" "true" 
Option "AGPMode" "4" 
EndSection

Section "Monitor" 
Identifier "Configured Monitor" 

Modeline "1280x960_72.00" 124.54 1280 1368 1504 1728 960 961 964 1001 +HSync +Vsync

Option "PreferredMode" "1280x960_72.00" 

EndSection

Section "Screen" 
Identifier "Default Screen" 
Monitor "Configured Monitor" 
EndSection

To download this file:
wget http://mac.linux.be/files/xorg/emac5.txt

Other possible resolutions for emac ATI. Replace existing Modeline and options for the resolution you require or add them to your xorg.conf using a # sign at the begining of the lines you don't want activated in the Monitor section

Modeline "800x600_112.00" 76.84 800 848 936 1072 600 601 604 640 +hsync +vsync
Option "PreferredMode""800x600_112.00" 

Modeline "1024x768_89.00" 99.07 1024 1088 1200 1376 768 769 772 809 +hsync +vsync
Option "PreferredMode" "1024x768_89.00" 

Modeline "1152x870_80.00" 113.11 1152 1224 1352 1552 870 871 874 911 +hsync +vsync
Option "PreferredMode" "1152x870_80.00