Fedora Core 4 : kernel 2.6.12.1
 
1. Single Matrox AGP 32MB G400 Dual Head.
All I get is one head. That's it. The other head is black.
 
2. Single Matrox AGP 16MB G450 Dual Head
From power on all through boot up, the two heads put out exactly the same image.
 
3. Multiple Matrox PCI (Millennium I, II & Mystique)
Beautiful! Works exactly like it should. PCI slot #1 is fb0, #2 is fb1, etc. I have 4 different versions of Matrox PCI cards working at the same time with a PCI network card.
 
4. Single Matrox AGP 16MB G450 Dual Head + Multiple Matrox PCI (Millennium I, II & Mystique)
From power on all through BIOS and into Linux boot up, the two heads on the G450 put out exactly the same image and are the primary display. As soon as Tux appears, he's on the first PCI Matrox card and the Linux boot continues with that as /dev/fb0. The AGP card is /dev/fb1 and additional PCI cards are 2, 3, etc.
 
5. Single Matrox AGP 32MB G400 Dual Head + Multiple Matrox PCI (Millennium I, II & Mystique)
Just one head on the G400 and it is the primary boot display. As soon as Tux appears, he's on the first PCI Matrox card and the Linux boot continues with that as /dev/fb0. The AGP card is /dev/fb1 and additional PCI cards are 2, 3, etc.
 
There is something else that is a little bit annoying. Every time I switch out the video cards, Linux boots up into X. I have a '3' at the end of the boot line in grub.conf to enter run level 3 and that works every time except for the first time I boot up with a different video card. Once I log in to X as root and wait for it to come up I have to ctrl-alt-backspace to get out to a shell prompt, where I have to log in as root again.
 
I will try all of this on another machine in Red Hat 9.0 with whatever 2.4 kernel is sitting there and let you know.
 
James.   :o)
 
----- Original Message -----
From: James Lehman
To: linux-fbdev-users@lists.sourceforge.net
Sent: Friday, September 09, 2005 12:08 PM
Subject: Re: [Linux-fbdev-users] Re: Re: Getting started

This much I can tell you... The BEST performance I have ever gotten out of ANY use of the frame buffer has been with Matrox cards. The last time I tried multiple video cards in the same computer was with kernel 2.4, all PCI Matrox cards in a mobo with an Intel 440 (BX ?) chipset. I will try it again and see what happens with 2.6 and let you know.
 
If I remember correctly, I have tried it with non Matrox cards and I think it sort-of worked, except the frame buffers above zero could not be set to anything other than 640x480 @ 8bpp, or something weird like that.
 
You know Matrox makes multi headed video cards. I have several of them. They are AGP and they work just like they should; /dev/fb0 & /dev/fb1.
 
James.   :o)
----- Original Message -----
From: William Estrada
To: james@akrobiz.com ; linux-fbdev-users@lists.sourceforge.net
Sent: Friday, September 09, 2005 1:59 AM
Subject: [Linux-fbdev-users] Re: Re: Getting started

James,

  I would like to see how you got 5 Frame Buffer devices configured.

  I have one MX 4000-PCI, one Ti 4200-AGP(two ports), one S2-Trio and still only
get one FB.  What did you have to do to get 5 FBs?  I'm missing something
here!  What version of Linux are you running.

--
  William Estrada    --  MrUmunhum at popdial dot com  --   408-997-0743
  Ymessenger ID: MrUmunhum
  HTTP://Mt-Umunhum-Wireless.net
If you want to use more than one video card then that implies that you =
need at least one that is PCI. I have had success using 5 Matrox PCI =
cards (all slots full).