I answered this (sort of) in a PM but I’ll post my config here for anyone else who hits this page later.
Here’s a picture of my setup (shame the top screens are not the same size, but this is off ONE card running Twinview)
http://imgur.com/a/m5xTL
Ignoring the top screens, my config for 5760x1080 is: -
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
Section "ServerFlags"
Option "Xinerama" "0"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
Option "XkbOptions" "numpad:microsoft"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Samsung SyncMaster"
HorizSync 30.0 - 81.0
VertRefresh 50.0 - 60.0
Modeline "5760x1080" 326.596 5760 5776 5792 5880 1080 1083 1097 1111 +hsync +vsync
Option "DPMS"
Option "ExactModeTimingsDVI" "True"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9600 GT"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
Option "TwinView" "True"
Option "TwinviewXineramaInfo" "True"
Option "TwinViewXineramaInfoOverride" "1920x1080+1920+0, 1920x1080+0+0, 1920x1080+3840+0"
Option "nvidiaXineramaInfo" "True"
Option "nvidiaXineramaInfoOverride" "1920x1080+1920+0, 1920x1080+0+0, 1920x1080+3840+0"
Option "metamodes" "5760x1080 +0+0"
Option "UseEDID" "False"
# Option "NoBandWidthTest" "True"
Option "UseEDIDFreqs" "FALSE"
Option "UseEdidDpi" "FALSE"
Option "ModeDebug" "True"
Option "ModeValidation" "AllowNon60HzDFPModes, NoMaxPClkCheck, NoEdidMaxPClkCheck, AllowInterlacedModes, NoMaxSizeCheck, NoHorizSyncCheck, NoVertRefreshCheck, NoWidthAlignmentCheck, NoDFPNativeResolutionCheck, NoVirtualSizeCheck, NoEdidModes, NoExtendedGpuCapabilitiesCheck, ObeyEdidContradictions, NoTotalSizeCheck, NoDualLinkDVICheck, NoDisplayPortBandwidthCheck"
#"NoDFPNativeResolutionCheck, NoVirtualSizeCheck, NoMaxPClkCheck, NoHorizSyncCheck, NoExtendedGpuCapabilitiesCheck, NoVertRefreshCheck, NoWidthAlignmentCheck"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
Note that bksunday removed the option “AllowNon60HzDFPModes” to get it to work. I have it in. YMMV.
To get all 6 screens to work at a wacky resolution of 5760x2104 I have the following: -
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
Option "XkbOptions" "numpad:microsoft"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Samsung SyncMaster"
HorizSync 30.0 - 81.0
VertRefresh 50.0 - 60.0
Modeline "5760x1080" 326.596 5760 5776 5792 5880 1080 1083 1097 1111 +hsync +vsync
Modeline "3840x1024" 254.310 3840 3856 3872 3976 1024 1025 1032 1066 +hsync +vsync
#318,250 3840 3856 3872 3976 1024 1025 1032 1066 +hsync +vsync
Option "DPMS"
Option "ExactModeTimingsDVI" "True"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9600 GT"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
Option "TwinView" "1"
Option "TwinviewXineramaInfo" "True"
Option "TwinViewXineramaInfoOverride" "1920x1080+1920+1024, 1920x1080+0+1024, 1920x1080+3840+1024, 1280x1024+960+0, 1280x1024+2240+0, 1280x1024+3520+0"
Option "metamodes" "DFP-0: 5760x1080+0+1024, DFP-1:3840x1024+960+0"
Option "UseEDID" "False"
# Option "NoBandWidthTest" "True"
Option "UseEDIDFreqs" "FALSE"
Option "UseEdidDpi" "FALSE"
Option "ModeDebug" "True"
Option "ModeValidation" "AllowNon60HzDFPModes, NoMaxPClkCheck, NoEdidMaxPClkCheck, AllowInterlacedModes, NoMaxSizeCheck, NoHorizSyncCheck, NoVertRefreshCheck, NoWidthAlignmentCheck, NoDFPNativeResolutionCheck, NoVirtualSizeCheck, NoEdidModes, NoExtendedGpuCapabilitiesCheck, ObeyEdidContradictions, NoTotalSizeCheck, NoDualLinkDVICheck, NoDisplayPortBandwidthCheck"
#"NoDFPNativeResolutionCheck, NoVirtualSizeCheck, NoMaxPClkCheck, NoHorizSyncCheck, NoExtendedGpuCapabilitiesCheck, NoVertRefreshCheck, NoWidthAlignmentCheck"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection