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.
-- [feisty] X is blank after upgrade https://launchpad.net/bugs/82312 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
