Problem with 2 cards and 3 monitors

[gnc207]

I have P3 800,

-Matrox G450 Dual Head AGP,
-ATI 3D Rage PCI,

and 3 monitors.

Works fine under Win98, I can get all 3 monitors.
But it doesn’t work on Win2000/XP.
Works only AGP card Matrox.
(or if I switch in Bios to primary PCI, only ATI PCI works then)

Any idea how to get both cards and all 3 monitors to work under Win2000/XP?

[MultimediaMan]

Are both cards working in the Device manager?

[gnc207]

Only one.

Depends which one I set as primary in BIOS.

[MultimediaMan]

IIRC, there is a jumper on the ATI card for IRQ usage, make sure it is jumped to enable IRQ usage.

Failing that, move to a different PCI slot, but again only after you enable IRQ usage.

[UtwigMU]

Get Millennium, Millennium II, G200 or G450 PCI.

Two Matrox cards is teh ueber win!