I had the same console problem and it was really painfull!
I solved it loading nvidia module with a couple of options.
modprobe nvidia NVreg_SoftEDIDs=0 NVreg_Mobile=2
Take a look to the README that you can find in doc folder of nvidia driver sources for the complete description of those options.
It worked for me (AMD64, 5700FX) and i hope this will help.
I don't know whether this broke something else ......
Maurizio aka gk