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Old 11-24-09, 04:25 PM   #1
Diod
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Join Date: Nov 2009
Posts: 3
Default 2 Nvidia 9800M GT's in SLI

I have a laptop running Xubuntu 9.10 with 2 9800M GT's that I wanna put in SLI. I'm running driver version 185.18.36
I've tried adding the SLI option in the xorg.conf file, but when I would restart my laptop, I would get a black screen.
I have also tried adding the BusID to the device section(for only one card though), but it would still result in a black screen.

By black screen i mean that it appeared as if the screen was completely turned off. (in contrast to the screen being on and showing black)

Any clues on how to get SLI working?

EDIT: nvidia-bug-report.log added, but since i cant do anything after the x server restarts with the SLI option on, i dont know if there is much you can get from it

EDIT 2: I just now see there are multiple threads about SLI and Dell M1730 laptops, so I'm sorry for this double post.
Attached Files
File Type: gz nvidia-bug-report.log.gz (40.0 KB, 94 views)
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Old 11-24-09, 05:59 PM   #2
Diod
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Posts: 3
Default Re: 2 Nvidia 9800M GT's in SLI

I've actually gotten it to work now:

My xorg.conf:
Code:
Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync       28.0 - 33.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "nVidia Corporation G92 [GeForce 9800M GT] 1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
EndSection

Section "Device"
    Identifier     "nVidia Corporation G92 [GeForce 9800M GT] 2"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:4:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "nVidia Corporation G92 [GeForce 9800M GT] 1"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "SLI" "Auto"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
Although now, when i want to go into nvidia-settings or play a game(like Nexuiz), it(and by "it" i mean everything) tends to hang for 10-15 secs before continuing as usual.
Seems as if enabling SLI is causing a decrease in performance?

Booting up also takes a little longer, the screen goes black for a sec as if it's off, but then the backlight goes on again and it boots up as usual.
Attached Files
File Type: gz nvidia-bug-report.log.gz (34.7 KB, 81 views)

Last edited by Diod; 11-24-09 at 06:13 PM. Reason: Added new log file
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Old 11-25-09, 12:21 PM   #3
Diod
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Join Date: Nov 2009
Posts: 3
Default Re: 2 Nvidia 9800M GT's in SLI

I spoke a little too soon, I had to disable it again because I got a black screen at startup
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