Comment 8 for bug 1265570

Looks like the issue entered in 331.20-0ubuntu7. From the changelog[1]:

+nvidia-graphics-drivers-331 (331.20-0ubuntu7) trusty; urgency=low
+
+ * debian/rules, debian/templates/control.in,
+ debian/templates/nvidia-graphics-drivers.dirs.in,
+ debian/templates/nvidia-graphics-drivers.install.in,
+ debian/templates/nvidia-graphics-drivers.postinst.in,
+ debian/templates/nvidia-graphics-drivers.postrm.in,
+ debian/nvidia-persistenced.conf:
+ - Add support for nvidia-persistenced.
+ - Conflict/replace/provide with nvidia-persistenced
+ to avoid potential problems with packages from
+ xorg-edgers or other PPAs.
+ - Depend on passwd and adduser.
+ - Drop Recommend nvidia-persistenced.
+ - Recommend nvidia-prime. Keep bumblebee as an
+ alternative, so that users who prefer to use
+ bumblebee, can keep doing so.
+ - Drop cdbs and switch to debhelper 7.
+
+ -- Alberto Milone <email address hidden> Tue, 17 Dec 2013 13:08:33 +0100

The control file[2] recommends either nvidia-prime (>= 0.5) or bumblebee. nvidia-prime does not exist for Quantal or Raring. Saudy and Precise have 0.4.2-something. Since recommended packages are installed by default, shouldn't these packages be marked as "Suggested"? Installing bumblebee-nvidia will blacklist the nvidia drivers, bringing grief to users.

 [1]: https://launchpadlibrarian.net/162426597/nvidia-graphics-drivers-331_331.38-0ubuntu1~xedgers~trusty1.diff.gz
 [2]: https://launchpadlibrarian.net/162426956/buildlog_ubuntu-trusty-amd64.nvidia-graphics-drivers-331_331.38-0ubuntu1~xedgers~trusty1_UPLOADING.txt.gz