Re: (EE) Screen(s) found, but none have a usable configuration.
I don't see any messages in your dmesg log from the kernel module. Did you remember to try to start X before generating the bug report? Your /var/log/messages log file only has the normal NVRM version message. What happens if you try to run "modprobe nvidia" as root from the console? After trying to start X, do /dev/nvidiactl and /dev/nvidia0 exist?