Bug#728180: gdm3: service gdm3 stop leaves lots of processes running, preventing restart or start of other dm

[Johannes Rohr]

Package: gdm3
Version: 3.8.4-3
Severity: normal

After running service gdm3 stop I still see a host of related processes running:


root     28772  0.0  0.1 294920  4316 ?        Sl   09:13   0:00 /usr/lib/gdm3/gdm-simple-slave --display-id /org/gnome/DisplayManager/Displays/_0
root     28777  0.4  0.3 153236 14748 tty7     Ssl+ 09:13   0:00 /usr/bin/Xorg :0 -background none -verbose -auth /var/run/gdm3/auth-for-Debian-gdm-h5EX9C/database -nolisten tcp vt7
root     28790  0.0  0.1 256400  6436 ?        Sl   09:13   0:00 gdm-session-worker [pam/gdm-launch-environment]
Debian-+ 28801  0.0  0.3 587212 12128 ?        Ssl  09:13   0:00 /usr/bin/gnome-session --autostart /usr/share/gdm/greeter/autostart
Debian-+ 28804  0.0  0.0  24464   608 ?        S    09:13   0:00 /usr/bin/dbus-launch --exit-with-session /usr/bin/gnome-session --autostart /usr/share/gdm/greeter/autostart
Debian-+ 28835  0.9  2.5 1389068 103396 ?      Sl   09:13   0:01 gnome-shell --mode=gdm


What I did what running

service gdm3 stop
dpkg-reconfigure kdm , selected kdm as default dm
service kdm start

The screen remains blank. Only after  manually killing those processes, kdm can be launched.

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (450, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.11-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gdm3 depends on:
ii  accountsservice                        0.6.34-2
ii  adduser                                3.113+nmu3
ii  dconf-cli                              0.18.0-1
ii  dconf-gsettings-backend                0.18.0-1
ii  debconf [debconf-2.0]                  1.5.51
ii  eterm [x-terminal-emulator]            0.9.6-1
ii  gir1.2-gdm3                            3.8.4-3
ii  gnome-session [x-session-manager]      3.8.4-3
ii  gnome-session-bin                      3.8.4-3
ii  gnome-settings-daemon                  3.8.5-2
ii  gnome-shell                            3.8.4-4
ii  gnome-terminal [x-terminal-emulator]   3.8.4-1
ii  gsettings-desktop-schemas              3.8.2-2
ii  icewm [x-window-manager]               1.3.7-5
ii  kde-window-manager [x-window-manager]  4:4.10.5-3
ii  konsole [x-terminal-emulator]          4:4.10.5-2
ii  libaccountsservice0                    0.6.34-2
ii  libatk1.0-0                            2.10.0-2
ii  libaudit1                              1:2.3.2-2
ii  libc6                                  2.17-93
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                     2.28.2-1
ii  libgdm1                                3.8.4-3
ii  libglib2.0-0                           2.36.4-1
ii  libglib2.0-bin                         2.36.4-1
ii  libgtk-3-0                             3.8.6-1
ii  libpam-modules                         1.1.3-9
ii  libpam-runtime                         1.1.3-9
ii  libpam0g                               1.1.3-9
ii  libpango-1.0-0                         1.32.5-5+b1
ii  libpangocairo-1.0-0                    1.32.5-5+b1
ii  librsvg2-common                        2.36.4-2
ii  libselinux1                            2.1.13-3
ii  libwrap0                               7.6.q-24
ii  libx11-6                               2:1.6.2-1
ii  libxau6                                1:1.0.8-1
ii  libxdmcp6                              1:1.1.1-1
ii  libxrandr2                             2:1.4.1-1
ii  lsb-base                               4.1+Debian12
ii  metacity [x-window-manager]            1:2.34.13-1
ii  twm [x-window-manager]                 1:1.0.6-1
ii  upower                                 0.9.23-2
ii  x11-common                             1:7.7+4
ii  x11-xserver-utils                      7.7+1
ii  xterm [x-terminal-emulator]            297-1

Versions of packages gdm3 recommends:
ii  at-spi2-core               2.10.0-1+b1
ii  desktop-base               7.0.3
ii  gnome-icon-theme           3.8.3-1
ii  gnome-icon-theme-symbolic  3.8.2.2-2
ii  x11-xkb-utils              7.7~1
ii  xserver-xephyr             2:1.14.3-4
ii  xserver-xorg               1:7.7+4
ii  zenity                     3.8.0-1

Versions of packages gdm3 suggests:
ii  gnome-orca            3.4.2-2
ii  libpam-gnome-keyring  3.8.2-2

-- Configuration Files:
/etc/gdm3/greeter.gsettings changed:
[org.gnome.desktop.background]
picture-uri='file:///usr/share/themes/Adwaita/backgrounds/morning.jpg'
 picture-options='zoom'
[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'


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