PCIe and a PCI video cards at the same time.

  • Thread starter Thread starter christopher.secord
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christopher.secord

On my previous computer, I had a dual head AGP card and a PCI video
card, and used three monitors.

I'm building a new machine so of course I got a m/b with PCIe. I
can't seem to get a PCIe video card and a PCI video card to work at
the same time.

Either works by itself. If I set the bios to initialize the PCI first
then that works but not the PCIe - and vice versa. This is not a
resource conflict. They are using different IRQs etc. I'm running
windows XP x64. In the device manager, which ever card is not working
has the incredibly helpful message, "this device is not working
because it has a problem." (thanks windows, that really helps me
troubleshoot).

I actually have four different PCI video cards that I've tried. The
PCIe card is an ATI and I tried ATI and nvidia PCI cards.

My question is, is there some specific reason why this shouldn't
work? Has something changed since the days of AGP, when I just
plugged the cards in and they worked. Is there some fundamental
change that prevents this from working with PCIe.

Thanks.
chris
 
On my previous computer, I had a dual head AGP card and a PCI video
card, and used three monitors.

I'm building a new machine so of course I got a m/b with PCIe. I
can't seem to get a PCIe video card and a PCI video card to work at
the same time.
Click to expand...

It should work, however you need to post the brand and model of mainboard
as well as the PCI and PCIe videocards. That will help generate more
meaningful advice.
 
you need to post the brand and model of mainboard
as well as the PCI and PCIe videocards. That will help generate more
meaningful advice.
Click to expand...

sure. thanks for trying to help.
motherboard: Intel DG33FB
PCIe card: HIS Radeon 2600 (http://www.hisdigital.com/html/
product_ov.php?id=316&view=yes)

I've tried several PCI cards. I don't have the exact model numbers in
front of me right now, but I will post them later if you'd like. On
my old system, I used an ATI AGP card and an nvidia PCI card and that
seemed to work well in windows and linux (ubuntu).
PCI card 1: older nvidia (the one I used on the old computer)
PCI card 2: a new nvidia card (geforce 5500 if memory serves)
PCI card 3: a new ATI card (one I bought at best buy. I don't
remember the model)
PCI card 4: an older ATI card (an S60 if memory serves)

Each of these cards works by itself.

thanks
-chris
 
sure. thanks for trying to help.
Click to expand...

This m/b has onboard IGMA 3100 video that automatically disables when a
video card is detected in the PCIe slot. From what I can gather, this board
is not happy to with both a video card in the PCIe and the PCI slot. It
should, however, run with two cards this way. Have you tried manually
assigning IRQ's and resources through the BIOS? I don't have this specific
board and I don't run x64 so I can't say whether this is a Win X64 issue or
not. But, FWIW, that's my advice.
 
Have you tried manually
assigning IRQ's and resources through the BIOS?
Click to expand...

Well, I did check for an IRQ conflict. The PCIe card is using IRQ 18
and the PCI is using 16. So, everything should be fine. But I'll try
manually assigning them anyway.
 
In message <qTKWj.2774$KB3.1672@edtnps91> "Augustus"
This m/b has onboard IGMA 3100 video that automatically disables when a
video card is detected in the PCIe slot. From what I can gather, this board
is not happy to with both a video card in the PCIe and the PCI slot.
Click to expand...

This is often the case when the motherboard has a smaller number of PCIe
channels available, only enough to drive a single card.

In theory this limitation shouldn't be a problem if you had a PCIe and
PCI card, however, life isn't as happy as in theory.
 
This is often the case when the motherboard has a smaller number of PCIe
channels available, only enough to drive a single card.

In theory this limitation shouldn't be a problem if you had a PCIe and
PCI card, however, life isn't as happy as in theory.
Click to expand...

I think you're right that this was a limitation of the motherboard. I
put the two video cards in a different computer and they work like a
champ. So, problem solved as far as I'm concerned.
 
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