Re: [SLUG] dual-heads/xinerama

From: Jason Boxman (jasonb@edseek.com)
Date: Mon Mar 06 2006 - 23:05:56 EST


On Monday 06 March 2006 23:19, michael hast wrote:
> Okay, all!
>
<snip>
> Does anyone know of any really good online tutorials that will walk
> me through setting up the dual-head display and xinerama? The
> configuration file doesn't look all that daunting, and the syntax is
> simple enough, but I'm scared of crashing X again.

Sure.

First, you don't need Xinerama for this. NVidia's driver comes with its own
compatible implementation, called TwinView. Here are the relevant portions
of my dual 17" setup with a Ti4200:

Section "Device"
        Identifier "nvidia"
        Driver "nvidia"
        Option "RenderAccel" "true"
        Option "TwinView" "true"
        Option "TwinViewOrientation" "LefOf"
        Option "MetaModes" "1152x864,1152x864"
        Option "AllowGLXWithComposite" "true"
        Option "Nologo" "true"
EndSection
> How do I determine the bus ID for my AGP slot, and what is the
> proper syntax according to X, and how do I tell it the difference
> between the two ports on the card?

You shouldn't need it, but `lspci` will tell you.

> Is there an app or tool that I can use that will make it really easy
> to set up, or is proper manual writing really the only way to do it?
> For reference, I'm running Debian 3.1, kernel 2.6.8-2, and here is
> my config file if you would like to give me specific pointers. I
> promise that if I screw it up, I won't be mad at you. I appreciate the
> help.

I'm running Debian Stable myself and my above config works perfectly.

You probably need to ensure that AGP for your mainboard is running, though.

jasonb@faith:~$ dmesg | grep -i agp
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected SiS 735 chipset
agpgart: AGP aperture is 128M @ 0xd0000000

-- 

Jason Boxman http://edseek.com/ - Linux and FOSS stuff

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