Dual Screen Mode

Paul Kaplan pkaplan1 at comcast.net
Tue Nov 25 10:38:42 UTC 2008


As promised, my dual screen xorg file that worked w/ 8.04 and 8.10.  Note that 
I do have an external monitor attached to a laptop.

On Saturday 22 November 2008 06:28 Paul Kaplan wrote:
> Some thoughts...
> First, this seems to be overly complicated for the current version of X,
> which is able to use a minimal xorg.conf file.  Some of the options you
> have are probably no longer needed and at worst may actually conflict with
> the new X.
>
> Try backing up your /etc/X11/xorg.conf and then replacing by
>
> sudo dpkg-reconfigure -phigh xserver-xorg
>
> Then I would add the virtual lines to define your virtual desktop size.
>
> If you then do xrandr, the output will give you info on each monitor. (you
> have them both defined as "Monitor-VGA-0").
>
> Then use xrandr options (I found
> http://www.thinkwiki.org/wiki/Xorg_RandR_1.2 helpful using -monitor,
> -output, -LeftOf, and -RightOf) to see if you can set things the way you
> want.
>
> I believe the only things you will then need to define in xorg.conf are the
> monitors and their relative positions.
>
> I will try to post my xorg.conf file on Monday when I get back to my other
> machine.
> Paul

Section "Device"
	Identifier	"Configured Video Device"
#	Option		"Monitor-LVDS" "internal"  #this is an xrandr default
#	Option		"Monitor-VGA"	"external" #this is an xrandr default
EndSection

Section "Monitor"
	Identifier	"LVDS"
	Option		"RightOf" "VGA"
EndSection

Section "Monitor"
	Identifier	"VGA"
EndSection

Section "Monitor"  #this stanza is to prevent screen flickering for me
	Identifier	"TV"                   #this is an xrandr default definition
	Option		"Ignore" "True"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Monitor		"Configured Monitor"
	Device		"Configured Video Device"
	SubSection "Display"
	  Depth 24
	  Virtual 2304 1024
	EndSubSection
EndSection





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