Bug#724731: [gdm3] gdm does not start properly, cannot login via gdm

[Valdinilson Lourenço da Cunha]

I've been analyzing the list of packages that are having problems and
comparing with my packages.

And what draws the most attention is the libglib2.0-0, which is the package
that I have more updated and it's dependence on GDM3.

Compared with a live version of UbuntuGnome 13.10 which uses GDM 3.8 and
notice how dependency libglib2.0-0 (> = 2.37.3) and libpam-​​systemd.

They are only suppositions, but may be a path.

I use systemd, do not believe that is why my GDM is working, because Ubuntu
still uses upstart.