Enable SLi in Ubuntu

Enable SLi in Ubuntu

After finally getting around installing Ubuntu 8.10 on my Dell XPS M1730 Notebook, I was interested to know what sort of performance I was getting from the dual nVidia M8700GT graphics cards this laptop sports. I did have a feeling that it was not utilising both cards and indeed my concern seems to have been entirely founded as it was most certainly not using both cards. This even though I am using the latest nVidia drivers in the Ubuntu repository.

It turns out however that the nVidia driver is indeed SLi ready though note enabled by default. Happy days I think, must be something I missed in the nVidia Xserver Config. Alas it was not. Both cards appear in the control panel however one is assigned to screen0 as it should be and the other is not attached to any screen.

So here is a quick guide as to what to do in order to enable full SLi support. Thankfully there is nothing much to it so here we go.

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