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Old 02-05-03, 02:35 PM   #1
DraK
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Default Two Geforce Cards in Linux, is it possible?

In Xp I run 2 screen cards, a GF3 AGP and a GF4MX PCI. I use nView and extend my desktop.

Is it possible to do this in Linux?

I'm running RH8 and have the latest drivers working.

Advise or help please....
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Old 02-06-03, 06:00 AM   #2
drag
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Yes it is very possible. I have done it with my geforce2 gts and a
?riva tnt? (i forget) pci card. Of course I had to use the generic NV driver that came with the XFREE86 4.X distro so I couldn't get any hardware acceleration from it.

There are 2 ways to set it up...

You could have 1 big desktop going over 2 monitors (xinerama) or have 2 seperate desktops on each of the 2 monitors. This is based on how you configure your XF86Config. You can also pick the orientation of your monitors in relation to each other. (left or right top or bottom). All this stuff is supported by XFree86 irregardless of what type of video card you have.

It also depends on what type of Window manager you plan on using. Some support multiple monitors better than others. I was using Enlightenment at the time and was very pleased on how it performed. You'll have to go to your WM's respective website in order to find out for yourself.

The linux documentation project (www.tldp.org) has a good howto on how to configure Xinerama. And will have XF86Config samples....

However I have no clue how NVidia's drivers will react... Your best bet is to set it up with the more linux-compatable NV driver and then attempt to impliment the propriatory nvidia drivers...

I plan on using a cheap MX440 pci card with tv out and my Geforce2 gts to acheive a 3 displays (2 mon., 1 tv), but its impossible for me to figure out how nvidia's drivers are going to react.

Nowadays with high quality 17 inch monitors going for cheap it is going to be more and more common for dual monitor setups. since it makes sense to me to buy 2 17 inchers for the same price of 1 21 incher. You just get more screen realstate!

Last edited by drag; 02-06-03 at 06:24 AM.
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Old 02-06-03, 12:28 PM   #3
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Default Yes and using it now with same cards

Hi

Yes, I have the SAME cards and using that setup right now. Gf3Ti500 and Gf4-440MX to dual 19" Samsung 191T LCDs. I use KDE 3.1 + Xinerama to get one huge desktop 2360x1024 and it works GREAT! Only problem I have right now is I want to use DVI instead of SVGA. That doesn't seem to work at the moment.

Nvidia Drivers 4191
XFree86 4.2.99.4
KDE 3.1 w/ Xinerama
Gentoo (2.4.20-gentoo-r1)
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Old 02-06-03, 12:38 PM   #4
exodist
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Default 2 cards

it is possible, set them up as different devices and screens. Then xinerama for large screen, but with xinerama you won't have 3d acceleration working well, or it didn't work last time I tried, that was in pre 1.0 though. also some tnt2's will not work as secondary cards in acceleration, others do. you do not have a tnt2 though so I will not get into details.
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Old 03-05-03, 02:45 AM   #5
DraK
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Great, could one of you please attach a copy of your x config file?

I'm pretty new at this and all the help is appreciated.

Is this specific to 4191 drivers or will it work on the earlier drivers to?


Thanks
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Old 03-05-03, 07:31 AM   #6
bodo
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Ok, this is my XF86Config.

I'm using the following hardware:

19" CRT on Elsa Gloria III (nvidia Quadro2 Pro) in AGP slot
15" CRT on (nvidia GeForce2 MX400) in PCI slot

I havn't tried TwinView yet, but it perfectly works in Xinerama-layout
Attached Files
File Type: txt xf86config.txt (6.0 KB, 211 views)
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Old 03-05-03, 11:44 AM   #7
DraK
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Thanks bodo.

I'll let you now how it goes
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Old 03-19-03, 04:32 PM   #8
rettw
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I have a system with 2 GeForce 2 cards installed, one GF2 MX400 PCI and one AGP. I run them with two different X desktops. Works great as long as the two cards don't share an interrupt.

I use this set up to watch a DVD on the desktop thats using S-Video Out on the PCI card and play Q3 on the monitor with VGA out on the AGP card at the same time.

I am using Nvidia linux drivers 3123, haven't tried the latest ones yet.

Machine is a PIII 850, 512 MB RAM, RH Linux 7.2, heavily patched 2.4.18 kernel from kernel.org.

Rett Walters
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Old 03-20-03, 12:41 PM   #9
DraK
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Thanks guys for all the help.

Lost all my data when drive failed, gonna have to reload but will check back here for all the halp that has been posted and I'll let you know how it goes.

Later

Lots of work ahead again!!!
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Old 04-07-03, 11:43 AM   #10
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I have a twinview GeForce2 MX400 (AGP) running natively on nVidia drivers in Mandrake. Have been for the last 18 months or so. I'm not at home, so I can't get you my XF86config-4 file yet, but I'll try to get to it in the next few days.

I do, however, want to go to three monitors on the new machine I'm building and am interest to know if I will get better performance from 2 different PCI cards or one PCI twinview card along with my 8X AGP (for the center monitor).

Anyone with an insight here?

Thanks!
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