dual head config problem

[pkaplan1 at comcast.net]

Thanks for the suggestions.
This only partially solved the problem.
When kdm starts I get a 2304x1024 virtual desktop spread over both screens. 
However, when kde subsequently starts, the LVDS head goes blank and I get only a 
1280x1024 desktop on the VGA monitor.

I can restore the virtual desktop w/

xrandr --output LVDS --auto --right-of VGA

Any more ideas?


Here's the new xorg.conf:
----------------------
Section "Files"
EndSection

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"us"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"ZAxisMapping"		"4 5"
	Option		"Emulate3Buttons"	"true"
EndSection

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"		"/dev/psaux"
	Option		"Protocol"		"auto-dev"
	Option		"HorizEdgeScroll"	"0"
EndSection

Section "Device"
	Identifier	"Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics Controller"
	Driver		"intel"
	Option		"Monitor-LVDS" "internal"
	Option		"Monitor-VGA" "external"
EndSection

Section "Monitor"
	Identifier	"internal"
	Option		"RightOf" "external"
EndSection

Section "Monitor"
	Identifier	"external"
	Option		"LeftOf" "LVDS"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics Controller"
	DefaultDepth	24
	SubSection "Display"
		Depth 24
		Virtual 2304 1024
		Viewport 0 0
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
EndSection
----------------------

On Thursday, November 15, 2007 14:3p:14 jbarnes at virtuousgeek.org wrote:
>On Thursday, November 15, 2007 2:26 pm pkaplan1 at comcast.net wrote:
>> Section "Device"
>>       Identifier      "Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics
>> Controller" Driver            "intel"
>>       Option          "Monitor-LVDS"
>>       Option          "Monitor-VGA"
>> EndSection
>
>These options need to reference the monitor identifier you've defined, e.g.
>
 > Option "Monitor-VGA" "Monitor-VGA"
>
>Though in your case that's a little confusing since you've given your monitor 
i>dentifiers the same name as the intel option.
>
>> Section "Monitor"
>>       Identifier      "Monitor-VGA"
>>       Option          "LeftOf" "Monitor-LVDS"
>> EndSection
>
>Once the intel driver knows which monitor section to look at for a given 
>monitor, it can honor the "LeftOf" etc. options.
>
>Here's my xorg.conf for reference (note that this is also documented in the 
>man page and at intellinuxgraphics.org).
>
>Jesse
>-------------- next part --------------
>Section "ServerLayout"
>        Identifier     "Default Layout"
>        Screen      0  "Screen0" 0 0
>        InputDevice    "Keyboard0" "CoreKeyboard"
>        InputDevice    "Synaptics" "CorePointer"
>EndSection
>
>Section "Files"
>        ModulePath   "/usr/lib64/xorg/modules"
>        FontPath     "/usr/share/fonts/bitmap-fonts"
>        FontPath     "/usr/share/X11/fonts/misc"
>        FontPath     "/usr/share/X11/fonts/75dpi"
>        FontPath     "/usr/share/X11/fonts/100dpi"
>        FontPath     "/usr/share/X11/fonts/Type1"
>        FontPath     "/usr/share/fonts/default/Type1"
>EndSection
>
>Section "InputDevice"
>        Identifier  "Keyboard0"
>        Driver      "kbd"
>        Option      "XkbModel" "pc105"
>        Option      "XkbLayout" "us"
>EndSection
>
>Section "InputDevice"
>        Identifier  "Synaptics"
>        Driver      "mouse"
>        Option      "Device" "/dev/input/mice"
>EndSection
>
>Section "Monitor"
>        Identifier   "Internal LCD"
>        Option      "RightOf" "VGA Screen"
>EndSection
>
>Section "Monitor"
>        Identifier   "VGA Screen"
>        Option      "LeftOf" "LVDS"
>EndSection
>
>Section "Device"
>        Identifier  "Videocard0"
>        Driver      "intel"
>        Option      "Monitor-LVDS" "Internal LCD"
>        Option      "Monitor-VGA" "VGA Screen"
>EndSection
>
>Section "Screen"
>        Identifier "Screen0"
>        Device     "Videocard0"
>        DefaultDepth     24
>        SubSection "Display"
>                Viewport   0 0
>                Virtual   2816 1440
>                Depth     24
>        EndSubSection
>EndSection