Second video card not detected?

[Brian Parish]

On Sunday 06 February 2005 18:16, Jim Cornette wrote:
> 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

Hmmm.  After a closer look, I can see both cards in the lspci output:

01:08.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 440 
AGP 8x] (rev a4) (prog-if 00 [VGA])
        Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 193
        Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
        Memory at d0000000 (32-bit, prefetchable) [size=128M]
        Expansion ROM at fc9e0000 [disabled] [size=128K]
        Capabilities: [60] Power Management version 2

02:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 4000 
AGP 8x] (rev c1) (prog-if 00 [VGA])
        Flags: 66Mhz, medium devsel, IRQ 177
        Memory at fd000000 (32-bit, non-prefetchable) [disabled] [size=16M]
        Memory at e0000000 (32-bit, prefetchable) [disabled] [size=128M]
        Expansion ROM at fffe0000 [disabled] [size=128K]
        Capabilities: [60] Power Management version 2
        Capabilities: [44] AGP version 3.0

Must have had an attack of blindness first time around.  Only the one on 
02:00.0 is being seen by system-config-display however.  These are identical 
cards, except that one is AGP and the other PCI.  There may be some hardware 
involvement in this problem as the POST shows up on the PCI card, which is 
the one that is properly detected.  I would have thought that the AGP card 
would get the primary role.

cheers
Brian