Thanks, Alex for the reply...

I did define 2 devices, 2 screens and ServerLayout as you've described. Only
difference is, I did not specify "Option AGPMode 1" in the Devices section.
I have a Matrox Millennium G400 which works in Windows98 but not in Mandrake
8.0.  

I am using the mga_drv.o driver that came with the LM8.0 distribution.
Should I download the mga driver from the Matrox website? I seem to remember
reading somewhere that the "mga" driver in LM8.0 distribution is broken...

Thanks,
Carlo.

-----Original Message-----
From: Alexander Poslavsky [mailto:[EMAIL PROTECTED]]
Sent: Thursday, October 25, 2001 10:07 AM
To: [EMAIL PROTECTED]
Subject: Re: [expert] Xinerama on Mandrake 8.0 with Matrox G400


On Tue, 23 Oct 2001 13:37:28 -0400
"DelaCruz, Carlo" <[EMAIL PROTECTED]> wrote:

DC> Hi,
DC> 
DC> Can someone help me configure my Matrox G400 dual-head for Mandrake 8.0?

To get dualhead working you need to config your G400 card as 2 different
devices. Here is the section from my X config:

Section "Device"
   Identifier  "G400_1"
   Driver      "mga"
   Option      "AGPMode" "1"
   BusID       "PCI:1:0:0"
EndSection

Section "Device"
   Identifier  "G400_2"
   Driver      "mga"
   BusID       "PCI:1:0:0"
   Screen      1
EndSection

Note that if you don't have a wonderful dualhead card you can run 2
different cards in the same way. This means you have to dig up a PCI
graphics card (I've never seen a motherboard with two AGP slots) but they
aren't too hard to find. This also means that you can run 3, 4, 5, ...
screens if you like (and if you have desk space for all these monitors)

You need to setup 2 Screen sections like you would normally and then a
ServerLayout section:

Section "ServerLayout"
   Screen         "Screen 1" RightOf "Screen 2"
   Screen         "Screen 2" 0 0
   InputDevice    "Mouse1" "CorePointer"
   InputDevice    "Keyboard1" "CoreKeyboard"
   Option         "Xinerama"
EndSection

Xinerama breaks anti-aliasing so ymmv 
taken from :
http://www.debianplanet.org/debianplanet/article.php?sid=256&mode=&order=0
(I used it to get mplayer running)

AP

-- 
You know you've spent too much time on the computer when you spill milk and
the first thing you think is, 'edit, undo.'


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