Nvidia driver doesnt install on amd64 using kernel 2.6.15-git2 and git4. Diff file for nvidia driver available from url
To quote the ebuild, this kernel is not supported by Gentoo due to its unstable and experimental nature. If you have any issues, try a matching vanilla-sources ebuild -- if the problem is not there, please contact the upstream kernel developers at http://bugme.osdl.org and on the linux-kernel mailing list to report the problem so it can be fixed in time for the next kernel release.
well using vanilla-sources and gentoo-sources the kernel wont even boot for me. It doesnt find /dev/* stuff. git works fine apart from this bug
The nvidia sure isn't supported by upstream, but I did see in a nvidia forum somewhere where they had a patch that fixed things to work properly with this driver (it was linked off of a post on the linux-kernel mailing list.) So again, this is a upstream issue, not a gentoo-kernel issue, please do not add bugs to this database for this kernel tree.