Bug#750691: gdm3 starts but fails to load a greeter

[Assasukasse]

Package: gdm3
Version: 3.8.4-6
Severity: normal

Dear Maintainer,
gdm3 fails to load up a greeter when installed on top of a jessie barebone with
gnome3 installed.
Switching to systemd has no effect
adding libpamp-systemd and reconfiguring pam modules has no effect

autologin works



-- System Information:
Debian Release: jessie/sid
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 3.14-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gdm3 depends on:
ii  accountsservice                       0.6.37-1
ii  adduser                               3.113+nmu3
ii  dconf-cli                             0.20.0-2
ii  dconf-gsettings-backend               0.20.0-2
ii  debconf [debconf-2.0]                 1.5.53
ii  gir1.2-gdm3                           3.8.4-6
ii  gnome-session [x-session-manager]     3.8.4-4
ii  gnome-session-bin                     3.8.4-4
ii  gnome-settings-daemon                 3.8.5-2
ii  gnome-shell                           3.8.4-8+b1
ii  gnome-terminal [x-terminal-emulator]  3.12.2-1
ii  gsettings-desktop-schemas             3.8.2-2
ii  libaccountsservice0                   0.6.37-1
ii  libatk1.0-0                           2.12.0-1
ii  libaudit1                             1:2.3.6-1
ii  libc6                                 2.18-7
ii  libcairo-gobject2                     1.12.16-2
ii  libcairo2                             1.12.16-2
ii  libcanberra-gtk3-0                    0.30-2
ii  libcanberra0                          0.30-2
ii  libgdk-pixbuf2.0-0                    2.30.7-1
ii  libgdm1                               3.8.4-6
ii  libglib2.0-0                          2.40.0-3
ii  libglib2.0-bin                        2.40.0-3
ii  libgtk-3-0                            3.12.2-1
ii  libpam-modules                        1.1.8-3
ii  libpam-runtime                        1.1.8-3
ii  libpam-systemd                        204-8
ii  libpam0g                              1.1.8-3
ii  libpango-1.0-0                        1.36.3-1
ii  libpangocairo-1.0-0                   1.36.3-1
ii  librsvg2-common                       2.40.2-1
ii  libselinux1                           2.3-1
ii  libwrap0                              7.6.q-25
ii  libx11-6                              2:1.6.2-2
ii  libxau6                               1:1.0.8-1
ii  libxdmcp6                             1:1.1.1-1
ii  libxrandr2                            2:1.4.2-1
ii  lsb-base                              4.1+Debian12
ii  metacity [x-window-manager]           1:2.34.13-1
ii  upower                                0.9.23-2+b2
ii  x11-common                            1:7.7+7
ii  x11-xserver-utils                     7.7+2
ii  xterm [x-terminal-emulator]           304-1

Versions of packages gdm3 recommends:
ii  at-spi2-core               2.10.2-3
ii  desktop-base               7.0.3
ii  gnome-icon-theme           3.12.0-1
ii  gnome-icon-theme-symbolic  3.12.0-1
ii  x11-xkb-utils              7.7+1
ii  xserver-xephyr             2:1.15.1-1
ii  xserver-xorg               1:7.7+7
ii  zenity                     3.12.1-1

Versions of packages gdm3 suggests:
ii  gnome-orca            3.12.1-1
ii  libpam-gnome-keyring  3.8.2-2+b1

-- Configuration Files:
/etc/gdm3/daemon.conf changed:
[daemon]
AutomaticLoginEnable=True
AutomaticLogin=agostino
[security]
[xdmcp]
[greeter]
[chooser]
[debug]

/etc/gdm3/greeter.gsettings changed:
session-name='gdm-shell'
[org.gnome.login-screen]
logo='/usr/share/icons/gnome/48x48/places/debian-swirl.png'
fallback-logo='/usr/share/icons/gnome/48x48/places/debian-swirl.png'
disable-user-list=false


-- debconf information:
  gdm3/daemon_name: /usr/sbin/gdm3
* shared/default-x-display-manager: gdm3