The "Nv" drivers are the open source nvidia drivers, you could try setting that to "nvidia" but I doubt that will fix it. Like I said, I'm pretty sure you need to reinstall the nvidia proprietary drivers.
The "Nv" drivers are the open source nvidia drivers, you could try setting that to "nvidia" but I doubt that will fix it. Like I said, I'm pretty sure you need to reinstall the nvidia proprietary drivers.