6800GT in SLI mode...

[walrus]

Hi all,

I have two 6800 GT GPU, on a asus P5ND2-SLI Deluxe mobo.

Each GPU work fine, alone.

But when I want to use them in SLI mode, I can't get it working.

XFree86 (4.3.0) complains :

(**) NVIDIA(0): Option "SLI" "auto"
(**) NVIDIA(0): Enabling RENDER acceleration
(**) NVIDIA(0): NVIDIA SLI enabled; using auto-selected rendering method.
(WW) NVIDIA(0): Failed to initialize SLI! Reason: GPUs do not match. Only
(WW) NVIDIA(0): one GPU will be used for this X screen. Please see the SLI
(WW) NVIDIA(0): Appendix in the README for troubleshooting suggestions
(II) NVIDIA(0): NVIDIA GPU GeForce 6800 GT at PCI:1:0:0
(--) NVIDIA(0): VideoRAM: 262144 kBytes
(--) NVIDIA(0): VideoBIOS: 05.40.02.26.00
(II) NVIDIA(0): Detected PCI Express Link width: 8X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 6800 GT at PCI:1:0:0:

I read README but it did not help me.

What's wrong ?

Thanks in advance.

[netllama]

Here's the reason for the failure:
(WW) NVIDIA(0): Failed to initialize SLI! Reason: GPUs do not match.

Are you certain that both videocards are identical?

Please generate and post an nvidia-bug-report.log along with the output from 'lspci'

Thanks,
Lonni

[walrus]

[quote=netllama]Here's the reason for the failure:
(WW) NVIDIA(0): Failed to initialize SLI! Reason: GPUs do not match.

Are you certain that both videocards are identical?
Yes I do !
This is why I don't understand the message.

Please generate and post an nvidia-bug-report.log along with the output from 'lspci'
Ok.

0000:01:00.0 VGA compatible controller: nVidia Corporation NV40 [GeForce 6800 Ultra/GeForce 6800 GT] (rev a2)
0000:02:00.0 VGA compatible controller: nVidia Corporation NV40 [GeForce 6800 Ultra/GeForce 6800 GT]

I attached the bug-report.

Thanks !

[netllama]

Those GPUs aren't the same. Note the "(rev a2)" on the end of the first one. Did you purchase both cards at the same place and time?

Thanks,
Lonni

[walrus]

[quote=netllama]Those GPUs aren't the same. Note the "(rev a2)" on the end of the first one. Did you purchase both cards at the same place and time?

It's a typo.

marsu[pts/0]:~/{3}/> lspci | grep -i vga
0000:01:00.0 VGA compatible controller: nVidia Corporation NV40 [GeForce 6800 Ultra/GeForce 6800 GT] (rev a2)
0000:02:00.0 VGA compatible controller: nVidia Corporation NV40 [GeForce 6800 Ultra/GeForce 6800 GT] (rev a2)

[netllama]

The two cards have a different VBIOS, which also makes them dissimilar. Are they both Asus cards? If so, you need to have Asus either provide a VBIOS update to get them both to the same version, or replace one of the cards so that they are both using the same version.

Thanks,
Lonni

[walrus]

[quote=netllama]The two cards have a different VBIOS, which also makes them dissimilar.
Ok.

Are they both Asus cards?
Yes.

If so, you need to have Asus either provide a VBIOS update to get them both to the same version, or replace one of the cards so that they are both using the same version.
Ok.

Thanks.

[walrus]

> If so, you need to have Asus either provide a VBIOS update to get them both > to the same version
Ok, but where can I download it ?
I typed "vbios" on asus website search engine : 0 result
:-(
On google, most pages are russian pages.

> or replace one of the cards so that they are both using the same version.
I just bought the second GPU today.
And N6800GT are quite difficult to find now.
Anyway, retailer could not tell me the vbios rev if I asked him...

Thanks.

[chunkey]

go here: (see download section)
mvktech.org

or, what about ASUS support center?

[walrus]

Originally Posted by chunkey

go here: (see download section)
mvktech.org

Ok, I'm going to try it.
I only don't understand why it's not on asus or nvidia website...

or, what about ASUS support center?

I post a message.
Waiting for an answer...


Thanks.

[netllama]

walrus, Asus would need to provide the VBIOS. As chunkey suggested, you need to contact Asus to address this problem.

Thanks,
Lonni

[walrus]

[quote=netllama]walrus, Asus would need to provide the VBIOS. As chunkey suggested, you need to contact Asus to address this problem.

Ok, thanks to you, I can get it working.
I've downloaded bios from mvktech.net and now, SLI works :
(**) NVIDIA(0): Option "SLI" "auto"
(**) NVIDIA(0): Enabling RENDER acceleration
(**) NVIDIA(0): NVIDIA SLI enabled; using auto-selected rendering method.
(II) NVIDIA(0): NVIDIA GPU GeForce 6800 GT at PCI:1:0:0
(--) NVIDIA(0): VideoRAM: 262144 kBytes
(--) NVIDIA(0): VideoBIOS: 05.40.02.26.00
(II) NVIDIA(0): Detected PCI Express Link width: 8X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 6800 GT at PCI:1:0:0:
(--) NVIDIA(0): Iiyama PLE480/481 (DFP-0)

But...
marsu[pts/0]:~/{6}/> nvidia-settings
The program 'nvidia-settings' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadValue (integer parameter out of range for operation)'.
(Details: serial 45 error_code 2 request_code 147 minor_code 3)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)

What 's wrong ?

Thanks in advance.