I'm using nvidia drivers on current PC,
I installed the drivers, "apt-get install nvidia-glx nvidia-settings" and then ran the following: sudo nvidia-glx-config enable
then had to tweak the xorg.conf for the monitor settings and resolution for my monitor,
did you run the nvidia-glx-config enable
revant
When i install through apt i run nvidia-glx-config enable .. and then try to start x .. and thats when it reboots the machine. When it boots again, it gets to point when it is about to load x and then reboots. So i go inot the recovery mode (from grub) and then do a nvidia-glx-config disable. THen things are back to normal.
In the case where i build the module from nvidia's official driver i had to copy back the xorg.conf file manually( i had backed it up earlier) to get things back to normal.