Yesterday I installed the latest Nvidia 64 bit driver (280-13) on openSUSE
12.1 MS3 on versions rc6, rc 7 and released kernel 3.0.0. I installed the
hardway with no problems. Did not have to configure the x-server.
Only thing to remember is to backlist the nouveau driver it now done in
/etc/modeprobe.d/nvidia.conf. I think it will also work if its in the 50-
blacklist.conf but I am not sure.
I have the 280.13 installed on two PCs, with one PC running openSUSE-11.3 KDE-4.4.4 (w/nVidia GTX 260 graphic card) and the other PC running openSUSE-11.4 KDE-4.6.0 (w/nVidia G210 graphic card). In both cases I have the blacklist of the nouveau driver in the /etc/modprobe.d/50-blacklist.conf file and not in the /etc/modprobe.d/nvida.conf.
So I am guessing it does not make any difference as to which file the nouveau driver is blacklisted (at least not for my hardware).