I made a clean installation of F15 on my laptop, is a Qosmio x505, it has an nvidia M360, so I download the nvidia drivers and intall it separatly.
To install the nvidia drivers I change the runlevel with the command
ln -sf /lib/systemd/system/multi-user.target /etc/systemd/system/default.target
And then, change it again to the graphical mode with the command
ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target
Everything seems ok, but the system only boot in text mode. I can load the Gnome with the command startx without problems, but how can I made that it loads the Gnome automatically?