Personally, I've had more problems with the nv driver than nvidia. My second monitor doesn't work well at all with nv, but does perfectly with nvidia.
Could you try using vesa instead of nv? If the monitor works fine, then we know that it's a bug in the nv driver. Thanks -- hyundai b71a monitor screen resolution and instability https://launchpad.net/bugs/40754 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
