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Old 04-19-2005, 02:00 PM   #1
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Registered: Apr 2004
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Triple head woes with 2 nvidia GFX cards

I hope someone can help, I have posted this a couple of places since im really just now at an impase.

I have 2 GFX cards in my system. 1x 6800GT AGP card with 2x DVI and an s-video, and a PCI FX5200 with 2 VGA and s-video.

I have 2x L1915S LG LCDs connected to the 6800GT and 1 connected to the FX5200, and i am also using the TV-Out on the FX5200. This setup works fine in Windows on the 61.xx driver, if i try a newer driver, when I attempt to activate the 3rd screen (with or without the TV attached), I get a BSOD in XP regarding the nvidia driver. Whether or not this is related to my current problem, i dont know.

Currently, I am able to get the 2 screens on the 6800 working fine, in either TwinView or Xinerama.

This is my current Xorg.conf file -

And this is the log file from when the setup fails -

Lspci results -

0000:02:09.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1) (prog-if 00 [VGA])
Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 21
Memory at f6000000 (32-bit, non-prefetchable) [disabled] [size=16M]
Memory at e8000000 (32-bit, prefetchable) [disabled] [size=128M]
Expansion ROM at f7ec0000 [disabled] [size=128K]
Capabilities: <available only to root>

Now, the part i am highly confused about, is that when Xorg is detecting the GFX cards, it detects the 5200 fine, with the right BusID. Yet, later on in the logfile, claims there is no valid Device section for that BusID. As you can see from the xorg.conf, there is.

I have tried numerous combinations, I have tried setting the nv driver for the 5200, telling it to ignore the TV-out etc, yet nothing works. I have also tried the UseInt10Module option as well, incase it wasnt initialising the 2nd card properly, but again, no joy.

Can anyone shed any light on this at all?
Old 12-18-2007, 10:49 AM   #2
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Registered: Dec 2007
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Screen in device config doesn't mean screen... Bad naming!

In your device sections, the "Screen" has nothing to do with the screen definitions. It is referencing which output to use on a dual head card. It must start with zero and progress from there. Single head cards need no "screen" option. Dual head cards always start with 0 and end with 1. A four head card would start with 0 and end with 3. This numbering is PER CARD, i.e. it does not span from one card to the next. Two dual heads would both start with 0 and end with 1, not start with 0 and end with 3..

They should have named the config parameter something clearer.


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