Re: Problem with nVidia in SLI mode - Fedora 10 and Ubuntu 8.10
There is a well known problem with dual card system when BusID isn't specified within the xorg.conf
(this problem has been reported again xorg, IIRC, so it is distro independant)
That's been said, you shouldn't have experienced such black screen. Was that because your screen was plugged on the second card ?
Any information from /var/log/Xorg.0.log.old would be appreciated but i guess you just need to specify a BusID section on the driver.