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Re: intel driver and dual screen



On Wed, 2008-01-16 at 11:00 -0500, Kristian Høgsberg wrote:

> One things that's not very well documented is that you need to tweak you
> xorg.conf for this to work.  You need to add a Virtual line to the
> "Display" subsection in the "Screen" section of the xorg.conf file, for
> example:
> 
> Section "Screen"
>         Identifier "Screen0"
>         Device     "Videocard0"
>         DefaultDepth     24
>         SubSection "Display"
>                 Viewport   0 0
>                 Depth     24
>                 Virtual   3600 1200
>         EndSubSection
> EndSection
> 
> The exact resolution depends on the monitors you want to use, but it has
> to be big enough to hold both side by side.  In my case, I have
> 1900x1200 and 1680x1050 monitors side by side, which gives me the
> numbers above.

I have a related issue on F9 - how do I persist the existence of my
second monitor?

I have a desktop with a dual head ATI graphics card[1], when I boot and
login the same image is shown on both monitors.  Once I have logged in I
can run the command:

	xrandr --output VGA-0 --left-of DVI-0

and that sets things up as I want them (Xinerama style).  Despite much
googling I can find no way to make this persist.  Can anyone offer any
suggestions?  I've attached my xorg.conf file in case it is relevant.

Many thanks,

Keith.

[1] $ lspci | grep ATI
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60
[Radeon X300 (PCIE)]
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]
# Xorg configuration for Xrandr based off the Intel web page:
# http://intellinuxgraphics.org/dualhead.html

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option	    "XkbModel" "pc105"
	Option	    "XkbLayout" "gb"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "radeon"
	Option      "VGA-0" "left"
	Option      "DVI-0" "right"
EndSection

Section "Monitor"
	Identifier  "left"
	Option      "PreferredMode" "1280x1024"
EndSection

Section "Monitor"
        Identifier  "right"
        Option      "PreferredMode" "1280x1024"
	Option      "RightOf" "left"
EndSection

Section "Screen"
	Identifier "Default Screen"
	Device     "Videocard0"
	Monitor    "left"
	DefaultDepth     24
	SubSection "Display"
		Depth     24
		Modes     "2560x1024"
		Virtual    2560 2048
	EndSubSection
EndSection


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