Re: DualScreen, 2 cards, AGP and PCI, have to boot from PCI?

From: Floyd L. Davidson (floyd_at_barrow.com)
Date: 08/27/04 

Date: Fri, 27 Aug 2004 06:51:34 -0800

Dieter Soltau <sprockhoevel@web.de> wrote:
>Floyd L. Davidson wrote:
>
>> First Step: Take the PCI card out of the machine. Set the BIOS
>> to init the AGP card. Boot to single user, or to multiuser
>> without X running, and see if you get what you expect from a
>> single monitor system. (If not, fix whatever it doesn't do
>> before proceeding.) Then try running X, and configure it to
>> work correctly with that video card and monitor.
>
>yes, that works. i have already been there.
>
>> Second Step: Put the PCI card into the machine and connect a
>> monitor to it. Do *not* change the BIOS. Boot to single user
>> or to multiuser without X running. See which monitor Linux
>> uses.
>
>it uses the AGP and i see nothing on the PCI card.

You say here that it uses the AGP card, then down below you say it
uses the PCI card. It can't be both...

>> BusID "PCI:00:14:00"
>> BusID "PCI:00:13:00"
>
>i have set this, except one card ist AGP here (1:0:0 and the pci 0:b:0).
>
>> If the Xinerama options are uncommented, the two monitors appear as
>> one display, host:0.0 to the server. Otherwise the two are found
>> in the order listed, as host:0.0 and host:0.1 to the server.
>
>even if xinerama is uncommented, they appear as 0.0 and 0.1. this is
>correct, and exactly what i want. uncommenting xnerame behaves the same as
>"xinerama" "off". hmm, at least it does here.

This makes no difference if you don't want xinerama, but it appears
your xinerama is not working. If xinerama works you will *not* have
anything appear as the :0.1 display. Both video cards will be accessed
only as :0.0 in one large virtual display.

>> For example, normally a program will be displayed on :0.0, which
>> in this case is the MGA video card and its monitor. To access the
>> other monitor, and individual program can be invoked from the command
>> line like this:
>>
>> > DISPLAY=:0.1 command
>>
>> and it will display on the S3VIRGE video card and its monitor.
>
>yes, all of this works fine. but my ttys are on the monitor connected to the
>pci card.

But you said above that Linux boots using the AGP display. Go back
to that stage, and *fix* it. None of this X configuration makes any
difference at all until you get the preliminary steps to work the way
you want.

>i dont think i can change this, because X has nothing to do with
>those screens. thats why i wanted to boot from my AGP, but then the PCI
>card is not inizialized at all.

Go back and follow the steps. Boot from the AGP and get that to
work. Stop looking at the monitor connected to the PCI card. Leave
the PCI card in the computer, but disconnect the monitor from it
until you get everything working appropriately with that configuration.

When you have Linux booting to the AGP card, then you can run X on it.
When you get X working right on the AGP card we can talk about the PCI
card. But not until then. 

-- 
FloydL. Davidson           <http://web.newsguy.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska)                         floyd@barrow.com

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