Maybe a SLI problem

kakaroth · 03-24-05, 05:57 PM

Hi,

I have found a problem that may be due to the SLI configuration.

I have an Asus A8N SLI deluxe motherboard with 2 6600GT SLI connected. I have installed the nvidia 7167 driver on my debian testing with a 2.6.10 kernel.

All the system works great. XFree starts with no problems and I can play doom3 at full speed.

There are some problems with some older games, in particular homeworld and soldier of fortune. When I start one of those, the screen switches from 1920x1200 to the game resolution going full screen but only the upper half of the screen is filled. The lower half remains black. If I exit from the game the screen returns back to its 1920x1200 with no problems.

I suppose that the nvidia module is using the SLI because it prints the message:

(II) NVIDIA(0): Detected PCI Express Link width: 8X

But it also prints a warning about the second card:
(WW) NVIDIA: No matching Device section for instance (BusID PCI:2:0:0) found

even if there is a second DEVICE section in XFree config file.
In any case, I don't think that this is the problem because doom3 works.

Any ideas?

Thanks

kakaroth · 03-25-05, 04:39 PM

Solved.

The problem arises only at 640x480. At higher resolutions it vanishes.

jOK · 03-26-05, 09:14 AM

Is SLI currently supported in 71.67 drivers?

kakaroth · 03-26-05, 11:20 AM

I can't say for sure.

The nvidia module prints something concerning it. I have played doom3/windows in SLI and doom3/linux and they seem to run at same rate but I don't know how to enable the "frames per second" display feature in doom3/linux so I cannot compare them.

**zander** · 03-26-05, 11:26 AM

No, 1.0-7167 doesn't support SLI. SLI support is planned for a future driver release.

blueworm · 03-26-05, 11:41 AM

Quote:

Originally Posted by kakaroth

I can't say for sure.

The nvidia module prints something concerning it. I have played doom3/windows in SLI and doom3/linux and they seem to run at same rate but I don't know how to enable the "frames per second" display feature in doom3/linux so I cannot compare them.

Code:

com_showfps 1

in console.

kakaroth · 03-27-05, 09:53 AM

Thanks for the information.

03-24-05, 05:57 PM	#1
kakaroth Registered User Join Date: Mar 2005 Posts: 4	Maybe a SLI problem Hi, I have found a problem that may be due to the SLI configuration. I have an Asus A8N SLI deluxe motherboard with 2 6600GT SLI connected. I have installed the nvidia 7167 driver on my debian testing with a 2.6.10 kernel. All the system works great. XFree starts with no problems and I can play doom3 at full speed. There are some problems with some older games, in particular homeworld and soldier of fortune. When I start one of those, the screen switches from 1920x1200 to the game resolution going full screen but only the upper half of the screen is filled. The lower half remains black. If I exit from the game the screen returns back to its 1920x1200 with no problems. I suppose that the nvidia module is using the SLI because it prints the message: (II) NVIDIA(0): Detected PCI Express Link width: 8X But it also prints a warning about the second card: (WW) NVIDIA: No matching Device section for instance (BusID PCI:2:0:0) found even if there is a second DEVICE section in XFree config file. In any case, I don't think that this is the problem because doom3 works. Any ideas? Thanks

03-25-05, 04:39 PM	#2
kakaroth Registered User Join Date: Mar 2005 Posts: 4	Re: Maybe a SLI problem Solved. The problem arises only at 640x480. At higher resolutions it vanishes.

03-26-05, 09:14 AM	#3
jOK Registered User Join Date: Feb 2005 Location: Barcelona, Spain Posts: 6	Re: Maybe a SLI problem Is SLI currently supported in 71.67 drivers?

03-26-05, 11:20 AM	#4
kakaroth Registered User Join Date: Mar 2005 Posts: 4	Re: Maybe a SLI problem I can't say for sure. The nvidia module prints something concerning it. I have played doom3/windows in SLI and doom3/linux and they seem to run at same rate but I don't know how to enable the "frames per second" display feature in doom3/linux so I cannot compare them.

03-26-05, 11:26 AM	#5
zander NVIDIA Corporation Join Date: Aug 2002 Posts: 3,740	Re: Maybe a SLI problem No, 1.0-7167 doesn't support SLI. SLI support is planned for a future driver release.

03-27-05, 09:53 AM	#7
kakaroth Registered User Join Date: Mar 2005 Posts: 4	Re: Maybe a SLI problem Thanks for the information.

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