Panic on boot

[David Gurvich]

What modules are loaded from loader.conf?  

I had two distinct issues on one machine that were entirely due to
module loading.  One was sound, using snd_driver instead of a specific
sound driver caused the machine to reboot.  The other issue was
nvidia.  The binary nvidia driver caused an instant reboot if loaded
too early, ie from loader.conf.  There was no problem if the module was
loaded from rc.local.