dual head config problem

[Rapael Morcha]

On Thu, Nov 15, 2007 at 10:26:57PM +0000, pkaplan1 at comcast.net wrote:
> I'm running Gutsy on a Thinkpad T43 (intel 915 video card and 1024x768 panel) and a Sony X-95 external monitor (1280x1024) with the xorg.conf file shown at the end of this message.
> 
> When X first starts, a 1280x1024 desktop appears on the external monitor and a mirrored 1024x768 desktop appears both on the internal monitor and placed on top and at the upper right of the external monitor.  The output of xrandr is:
> 
> --------------------------
>    $ xrandr
>    Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2304 x 1024
>    VGA connected 1280x1024+0+0 (normal left inverted right) 376mm x 301mm
>       1280x1024      60.0*+   75.0     59.9
>       1280x960       59.9
>       1024x768       75.1     70.1     60.0
>       800x600        72.2     75.0     60.3
>       640x480        75.0     72.8     60.0
>       720x400        70.1
>    LVDS connected 1024x768+0+0 (normal left inverted right) 0mm x 0mm
>       1024x768       57.6*+   85.0     75.0     70.1     60.0
>       832x624        74.6
>       800x600        85.1     72.2     75.0     60.3     56.2
>       640x480        85.0     72.8     75.0     59.9
>       720x400        85.0
>       640x400        85.1
>       640x350        85.1
>    TV disconnected (normal left inverted right)
>    $  
> ----------------------------------
> 
> Even though I have the line:
> 
> Option		"LeftOf" "Monitor-LVDS"

See below.

> 
> in the monitor stanza for the external monitor (see below), I have to manually execute:
> 
> xrandr --output VGA --left-of LVDS
> 
> to get a full 2304x1024 virtual desktop with the external monitor to the left of the internal monitor.
> 
> How can I hard code this into the xorg.conf file so I don't have to execute everytime I boot the machine with the external monitor?

See below.
 
> TIA
> Paul
> 
> 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"
> 	Option		"Monitor-VGA"
> EndSection
You need another Device section for another display.
Something like this -

Section "Device"
        Identifier      "0"
        Driver          "nvidia"
        BusID           "PCI:0:1:0"
        VideoRam        16384
        Option          "VBERestore" "true"
        Option          "UseFBDev"              "true"
        Option          "MonitorLayout" "CRT,LFP"       
        Screen          0       
EndSection

Section "Device"
        Identifier      "1"
        Driver          "nvidia"
        BusID           "PCI:0:1:0"
        VideoRam        16384
        Option          "UseFBDev"              "true"
        Option          "Display"       "CRT"
        Option          "MonitorLayout" "CRT,LFP" # put crt on pipe A
        Screen          1
EndSection

> 
> Section "Monitor"
> 	Identifier	"Monitor-LVDS"
> EndSection
> 
> Section "Monitor"
> 	Identifier	"Monitor-VGA"
> 	Option		"LeftOf" "Monitor-LVDS"
Try getting rid of the previous line.
Something like this -

Section "Monitor"
        Identifier      "LCD"
        Option          "DPMS"
        HorizSync       30.0-71.0
        VertRefresh     50-160
EndSection


Section "Monitor"
        Identifier      "Second display"
        VendorName      "Sony"
        ModelName       "211sxp"
        Option          "DPMS"
        HorizSync       30.0-70.0
        VertRefresh     50-160
EndSection
> EndSection
> 
> Section "Screen"
> 	Identifier	"Default Screen"
> 	Device		"Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller"
> 	Monitor		"Monitor-LVDS"
> 	DefaultDepth	24
> 	SubSection "Display"
> 		Depth 24
> 		Virtual 2304 1024
> 	EndSubSection
> EndSection

Where's your another Screen section?
Add something like this -
Section "Screen"
        Identifier      "External Display"
        Device          "1"
        Monitor         "Sony"
        DefaultDepth    24
        SubSection "Display"
                Depth           1
                Modes           "1280x800"
        EndSubSection
        SubSection "Display"
                Depth           4
                Modes           "1280x800"
        EndSubSection
        SubSection "Display"
                Depth           8
                Modes           "1280x800"
        EndSubSection
        SubSection "Display"
                Depth           15
                Modes           "1280x800"
        EndSubSection
        SubSection "Display"
                Depth           16
                Modes           "1280x800"
        EndSubSection
        SubSection "Display"
                Depth           24
                Modes           "1280x800"
        EndSubSection
EndSection


> Section "ServerLayout"
> 	Identifier	"Default Layout"
> 	Screen		"Default Screen"
> 	InputDevice	"Generic Keyboard"
> 	InputDevice	"Configured Mouse"
> EndSection
> --------------------------------------
Change your ServerLayout to something like this -

Section "ServerLayout"
        Identifier      "Dual Head Layout"
        Screen 0        "Local LCD"
	# comment out the next line to stop using two monitors, 
        Screen 1        "External Display" LeftOf "Default Screen"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
        InputDevice     "Synaptics Touchpad"
EndSection

Section "ServerFlags"
# comment out next line to stop using dual-head
        Option "Xinerama" "true"
EndSection

HTH

-- 
Cheers,
Raphael.