Second video card not detected?

[Jim Cornette]

Brian Parish wrote:

>Just loaded Core 3 and all seems fairly smooth except for setting up dual 
>monitors.  I have an PCI and a AGP card installed, but it looks very much 
>like the AGP card is not being detected.
>
>Tried booting a live CD and it found both cards, but system-config-display 
>sees only one card.  Tried manually setting up xorg.conf using the bus ID 
>detected using the live CD, but of course this is ignored because the card 
>doesn't exist as far as the current system is concerned.
>
>Is there a utility I can use to scan the bus and attempt to force recognition 
>of the second card?  Any suggestions welcome.
>
>TIA
>Brian
>
>  
>
I have the same problem with trying to get dual-head working in FC3. For 
some reason dual-head support is getting harder to get working.
Some people have installed the FC2 version of xorg-x11 and were able to 
get dual-head to work again. Others, like me are having fits with 
different combinations of video cards and being disappoined with the 
lack of a working dual-head configuration.
Rawhide (FC4 development) is even worse, the second card is not even 
listed in the choices when using system-config-display to attempt to 
configure dual head.

In my case, I have an internal Intel 815 card. If I add a PCI video card 
like an ATI or a Radeon 7200, I get memory address overlaps. This causes 
server lockups attempting dual-head and also causes reduced resolution 
capability for my internal 815 card.

I now have the internal 815 graphics controller and an AGP nvidia video 
card in this computer and the nvidia does not show in the lspci listing 
when the card is set as the primary or the internal video card is set to 
primary.

In my findings, I found that some computers disable the internal card if 
you try adding an AGP card, but allow the internal and a PCI card to 
function in a dual display configuration. The strange aspect is that the 
Intel 815 is listed in the output of lspci when the nvidia card is set 
to primary.

Anyway, I think that you might be out of luck at this stage for FC3 to 
be able to configure your system for dual-display. Post the output of 
lspci -v and those woth actual working dual-display setups might be able 
to figure out the pecularities that might be preventing your ability to 
get dual-display working.

Sorry I have no answers. Older xorg-x11 version might work.

Jim