Well, here's the problem, you have ancient nvidia bits installed. 285 is incompatible with the Ubuntu Precise xserver.
DkmsStatus: nvidia-current, 285.05.09, 3.0.0-12-generic, x86_64: installedError! Could not locate dkms.conf file. File: does not exist.
nvidia-current-updates, 280.13, 3.0.0-12-generic, x86_64: installed
I'm not sure why that didn't upgrade on its own, but the way to work around this problem is to uninstall and apt-get purge nvidia*, and then reinstall nvidia using jockey.
Well, here's the problem, you have ancient nvidia bits installed. 285 is incompatible with the Ubuntu Precise xserver.
DkmsStatus:
nvidia-current, 285.05.09, 3.0.0-12-generic, x86_64: installedError! Could not locate dkms.conf file.
File: does not exist.
nvidia- current- updates, 280.13, 3.0.0-12-generic, x86_64: installed
I'm not sure why that didn't upgrade on its own, but the way to work around this problem is to uninstall and apt-get purge nvidia*, and then reinstall nvidia using jockey.