Trouble with triple-head setup

[Liquid Snake]

I just got a 21" display so I'm trying to make a dual-head setup with my 17" while still keeping TV-out capability. What I want to do is connect the 21" monitor and the 20" TV to the GF2MX and the 17" monitor to the onboard video. The first problem is that I can't identify the onboard video on a scanpci listing:

[root@penelope root]# scanpci

pci bus 0x0000 cardnum 0x00 function 0x00: vendor 0x1039 device 0x0741
Silicon Integrated Systems [SiS] Device unknown

pci bus 0x0000 cardnum 0x01 function 0x00: vendor 0x1039 device 0x0003
Silicon Integrated Systems [SiS] Device unknown

pci bus 0x0000 cardnum 0x02 function 0x00: vendor 0x1039 device 0x0964
Silicon Integrated Systems [SiS] Device unknown

pci bus 0x0000 cardnum 0x02 function 0x05: vendor 0x1039 device 0x5513
Silicon Integrated Systems [SiS] 5513 [IDE]

pci bus 0x0000 cardnum 0x02 function 0x07: vendor 0x1039 device 0x7012
Silicon Integrated Systems [SiS] SiS7012 PCI Audio Accelerator

pci bus 0x0000 cardnum 0x03 function 0x00: vendor 0x1039 device 0x7001
Silicon Integrated Systems [SiS] SiS7001 USB Controller

pci bus 0x0000 cardnum 0x03 function 0x01: vendor 0x1039 device 0x7001
Silicon Integrated Systems [SiS] SiS7001 USB Controller

pci bus 0x0000 cardnum 0x03 function 0x02: vendor 0x1039 device 0x7001
Silicon Integrated Systems [SiS] SiS7001 USB Controller

pci bus 0x0000 cardnum 0x03 function 0x03: vendor 0x1039 device 0x7002
Silicon Integrated Systems [SiS] SiS7002 USB 2.0

pci bus 0x0000 cardnum 0x04 function 0x00: vendor 0x1039 device 0x0900
Silicon Integrated Systems [SiS] SiS900 10/100 Ethernet

pci bus 0x0000 cardnum 0x0a function 0x00: vendor 0x109e device 0x036e
Brooktree Corporation Bt878 Video Capture

pci bus 0x0000 cardnum 0x0a function 0x01: vendor 0x109e device 0x0878
Brooktree Corporation Bt878 Audio Capture

pci bus 0x0000 cardnum 0x0b function 0x00: vendor 0x1102 device 0x0002
Creative Labs SB Live! EMU10k1

pci bus 0x0000 cardnum 0x0b function 0x01: vendor 0x1102 device 0x7002
Creative Labs SB Live! MIDI/Game Port

pci bus 0x0001 cardnum 0x00 function 0x00: vendor 0x10de device 0x0110
nVidia Corporation NV11 [GeForce2 MX/MX 400]

pci bus 0x00e4 cardnum 0x0c function 0x00: vendor 0xffff device 0xffff
nVidia Corporation NV11 [GeForce2 MX/MX 400]

The X config file I'm using now is sloppy as hell but I have a nicer version that worked perfectly with the 17" and the TV.

[Liquid Snake]

What would help me a lot is to know if I can use the onboard video with another card. My boards is an ECS 741GX-M. If not I could always pop in an 8MB ATI Rage card. I won't be doing any 3D on it so it should work fine.

[eskiled]

In short, no. On most motherboards, when an AGP graphics card (or any graphics card...im not sure if it works with PCI) is plugged in, then the onboard video automatically shuts off.

sorry about your luck :(
eskiled

[Liquid Snake]

Thanks a lot. :) Next time I go home, I'll pick up my old ATI Rage.

[Vectorman]

As long as your second video card is a PCI card the on board video card will work as well.

I used to use that myself now I have a NVidia card that uses Twin View to display the screen accross two monitors.

HTH
Joel

[Liquid Snake]

Well my GF2MX AGP isn't great it's better than the onboard crap, so i'll go with two cards.

[][aBo][]

I've got a S3 onboard card as well. On startup I get a message that my onboard card has been turned off. But it still appears in lspci list. I haven't tryed daul monitor setup though.