Re: Vanta/Vanta LT?
The 0 domains may be the issue, however immediately below that is the real issue, where the X server's scan of the PCI bus is not finding your videocard, even though the kernel sees it on the PCI bus just fine.
So this looks like it might be an Xorg bug, however its not an nvidia driver bug, since the driver can't do anything with hardware that the X server isn't finding.
Another possibility is that you're hitting a BIOS bug. If there's a newer BIOS available, you should try applying it.