i know many people with sis cards that are dual headed are looking for this. took me months but i finally got it.
make sure you hae winischoffers driver, and you correct this config to fit YOUR system
Code:
Section "Monitor"
DisplaySize 300 230
HorizSync 28-70
Identifier "CRT2"
ModelName "D1028L"
Option "DPMS"
VendorName "DELL"
VertRefresh 50-120
UseModes "Modes[0]"
EndSection
Section "Monitor"
DisplaySize 300 230
HorizSync 28-70
Identifier "CRT1"
ModelName "D1028L"
Option "DPMS"
VendorName "DELL"
VertRefresh 50-120
UseModes "Modes[0]"
EndSection
Section "Modes"
Identifier "Modes[0]"
Modeline "1280x1024" 105.15 1280 1360 1496 1712 1024 1025 1028 1059
Modeline "1280x1024" 125.14 1280 1368 1504 1728 1024 1025 1028 1065
Modeline "1280x1024" 145.69 1280 1376 1512 1744 1024 1025 1028 1071
Modeline "1280x1024" 165.29 1280 1376 1512 1744 1024 1025 1028 1077
Modeline "1280x1024" 186.80 1280 1376 1520 1760 1024 1025 1028 1083
Modeline "1280x1024" 207.19 1280 1376 1520 1760 1024 1025 1028 1090
Modeline "1280x1024" 229.69 1280 1384 1528 1776 1024 1025 1028 1096
Modeline "1024x768" 61.89 1024 1080 1184 1344 768 769 772 794
Modeline "1024x768" 73.89 1024 1080 1192 1360 768 769 772 799
Modeline "1024x768" 86.18 1024 1088 1200 1376 768 769 772 803
Modeline "1024x768" 97.84 1024 1088 1200 1376 768 769 772 808
Modeline "1024x768" 110.91 1024 1096 1208 1392 768 769 772 813
Modeline "1024x768" 122.97 1024 1096 1208 1392 768 769 772 818
Modeline "1024x768" 136.57 1024 1104 1216 1408 768 769 772 822
Modeline "800x600" 36.88 800 832 912 1024 600 601 604 621
Modeline "800x600" 44.13 800 840 920 1040 600 601 604 624
Modeline "800x600" 51.73 800 840 928 1056 600 601 604 628
Modeline "800x600" 58.73 800 840 928 1056 600 601 604 632
Modeline "800x600" 66.71 800 848 936 1072 600 601 604 635
Modeline "800x600" 73.98 800 848 936 1072 600 601 604 639
Modeline "800x600" 82.55 800 856 944 1088 600 601 604 643
Modeline "640x480" 23.06 640 656 720 800 480 481 484 497
Modeline "640x480" 27.74 640 664 728 816 480 481 484 500
Modeline "640x480" 32.64 640 672 736 832 480 481 484 503
Modeline "640x480" 36.97 640 672 736 832 480 481 484 505
Modeline "640x480" 42.22 640 680 744 848 480 481 484 508
Modeline "640x480" 46.80 640 680 744 848 480 481 484 511
Modeline "640x480" 51.43 640 680 744 848 480 481 484 514
EndSection
Section "Screen"
DefaultDepth 16
SubSection "Display"
Depth 15
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 32
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
Device "SiS330-1"
Identifier "Screen[1]"
Monitor "CRT2"
EndSection
Section "Screen"
DefaultDepth 16
SubSection "Display"
Depth 15
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 32
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
Device "SiS330-2"
Identifier "Screen[2]"
Monitor "CRT1"
EndSection
Section "Device"
BoardName "SiS330-2"
BusID "1:5:0"
Driver "sis"
Identifier "SiS330-2"
VendorName "SiS"
Screen 1
EndSection
Section "Device"
BoardName "SiS330-1"
BusID "1:5:0"
Driver "sis"
Identifier "SiS330-1"
VendorName "SiS"
Screen 0
Option "EnableSiSCtrl" "true"
EndSection
Section "ServerLayout"
Identifier "Layout[all]"
InputDevice "Keyboard[0]" "CoreKeyboard"
InputDevice "Mouse[1]" "CorePointer"
Option "Clone" "off"
Option "Xinerama" "on"
Screen "Screen[1]"
Screen "Screen[2]" LeftOf "Screen[1]
EndSection
Section "DRI"
Group "video"
Mode 0660
EndSection
this is what mine looks like. similar to the example, but atleast you have a person here you can ask.
figured since LQ has helped me id contribute back.