Currently, failing to set up Xdmx correctly, I am trying to use 3 displays with 2 graphics cards in one machine under Fedora 15 and KDE. The 2 graphics cards are an ATI HD4670 (pcie) and (iirc) a Nvidia MX400 or similar (pci). The first card is driving a 1920x1080 + 1280x1024 display, and the pci one is driving a 1024x768 monitor.
The problem is that the output only goes over the HD4670, no matter what I do, and a
lspci | grep VGA only shows the radeon card. It seems that the PCI card is being disabled by the BIOS, or something similar to that, as no output ever goes out of it during boot. I saw no BIOS options at all relating to video devices,
If anyone could find a solution to this, it would be much appreciated.
EDIT: Also, all the monitors, cables, and graphics cards are known-working, they've all been used with other systems.