radeon, screen option

[Alex Deucher]

On Thu, Oct 8, 2009 at 6:48 PM, Csillag Kristof
<csillag.kristof at united-consult.hu> wrote:
> Dear all,
>
> Now that my individual monitors are operational, I would like to create
> the following setup:
>
>    Monitor 1            Monitor 2            Monitor 3
>    (Connected to      (Connected to      (Connected to
>    FireMV 2200)      RS690M)             FireMV2200)
>
> If I don't do anything special, the two monitors connected to the same
> card wind up as one big desktop, and I can put the third monitor RightOf
> or LeftOf them. But I want to put it between them!
>
> How do I do this?
>
> My guess was to put the two monitors into different Screen (and
> therefore, Device) sections. There seems to be some support for this, by
> using the "Screen" option in the device sections.
>
> Therefore, I have done this: (I only show the relevant part)
>
> ------------------------------------------------------------
> Section "Device"
>        Identifier      "FireMV 2200-1"
>        BusID           "PCI:3:6:0"
>        Screen          0
>        Driver          "radeon"
> EndSection
>
> Section "Device"
>        Identifier      "FireMV 2200-2"
>        BusID           "PCI:3:6:0"
>        Screen          1
>        Driver          "radeon"
> EndSection
>
> Section "Screen"
>        Identifier      "FireMV 2200 screen-1"
>        Device          "FireMV 2200-1"
> EndSection
>
> Section "Screen"
>        Identifier      "FireMV 2200 screen-2"
>        Device          "FireMV 2200-2"
> EndSection
>
> Section "ServerLayout"
>        Identifier "Test"
>        Screen 0 "FireMV 2200 screen-1"
> #        Screen 0 "FireMV 2200 screen-2"
> EndSection
>
> ------------------------------------------------------------
>

You need to user xinerama for all heads.  that means adding
screen/device sections for each head and specifying the layout in the
serverlayout section.

Alex