Bug#510632: gdm restart does not restart all instances of gdm

Jack Dodds brmdamon at aci.on.ca
Sat Jan 3 22:20:24 UTC 2009


Package: gdm
Version: 2.20.7-4
Severity: normal

*** Please type your report below this line ***

This is a dual seat system.  Part of the gdm.conf is shown below.

In the past (Sarge) I've used /etc/init.d/gdm restart to do a
clean restart to test changes to gdm.conf or xorg.conf.

Now, if I do that, the instance of gdm that is running on the
"second set" is not restarted.

Example:

The system has two seats.   The first seat has the flexible server
running and typically three users are
logged in.  The second seat does not have the flexible server and only
one user can log in.

Here is a ps command given before the restart:

jack at lucy:~$ ps -F -A |grep gdm
root      3231     1  0  3299  1540   0 Jan01 ?        00:00:00
/usr/sbin/gdm
root      3235  3231  0  3394  3040   0 Jan01 ?        00:00:01
/usr/sbin/gdm
root      3240  3235  0  6255 17556   0 Jan01 ?        00:01:37
/usr/X11R6/bin/X2 :0 -audit 0 -novtswitch -sharevts -layout Seat2 -auth
/var/lib/gdm/:0.Xauth -nolisten tcp vt7
root      3383  3231  0  3394  3076   0 Jan01 ?        00:00:01
/usr/sbin/gdm
root      3397  3383  0  7184 21340   0 Jan01 tty7     00:08:38
/usr/X11R6/bin/X1 :1 -audit 0 -layout Seat1 -auth /var/lib/gdm/:1.Xauth
-nolisten tcp vt7
root      3678  3231  0  3392  2704   0 Jan01 ?        00:00:01
/usr/sbin/gdm
root      3681  3678  0  5970 15528   0 Jan01 tty8     00:07:06
/usr/X11R6/bin/X :20 -auth /var/lib/gdm/:20.Xauth -nolisten tcp vt8
root      3958  3231  0  3392  2688   0 Jan01 ?        00:00:01
/usr/sbin/gdm
root      3961  3958  0 13106 41240   0 Jan01 tty9     00:22:52
/usr/X11R6/bin/X :21 -auth /var/lib/gdm/:21.Xauth -nolisten tcp vt9
jack     19029 19023  0   515   648   0 16:20 pts/0    00:00:00 grep gdm
jack at lucy:~$

Then from an ssh connection, su to root and type /etc/init.d/gdm restart.

This is the result a few seconds later:

jack at lucy:~$ ps -A -F |grep gdm
root      3235     1  0  3394  3040   0 Jan01 ?        00:00:01
/usr/sbin/gdm
root      3240  3235  0  6255 17568   0 Jan01 ?        00:01:40
/usr/X11R6/bin/X2 :0 -audit 0 -novtswitch -sharevts -layout Seat2 -auth
/var/lib/gdm/:0.Xauth -nolisten tcp vt7
root      3383     1  0  3394  3076   0 Jan01 ?        00:00:01
/usr/sbin/gdm
root      3397  3383  0  7184 21340   0 Jan01 tty7     00:08:39
/usr/X11R6/bin/X1 :1 -audit 0 -layout Seat1 -auth /var/lib/gdm/:1.Xauth
-nolisten tcp vt7
root     19103     1  0  3272  1420   0 16:27 ?        00:00:00
/usr/sbin/gdm
root     19104 19103  0  3272  1796   0 16:27 ?        00:00:00
/usr/sbin/gdm
root     19122 19104  0   411   392   0 16:27 ?        00:00:00
/usr/lib/gdm/gdmopen -l /bin/sh -c /usr/bin/whiptail --yesno 'There
already appears to be an X server running on display :0.  Should another
display number by tried?  Answering no will cause GDM to attempt to
start the server on :0 again.   (You can change consoles by pressing
Ctrl-Alt plus a function key, such as Ctrl-Alt-F7 to go to console 7.  X
servers usually run on consoles 7 and higher.)' 16 70
jack     19139 19132  0   515   644   0 16:28 pts/1    00:00:00 grep gdm
jack at lucy:~$

Processes 3235 and 3240 which are gdm and X on the second seat, are still
running, and in fact the screen that is showing them is not affected by the
restart.

I have found that it is impossible to do a clean restart since if any of
of the processes is killed, gdm automatically restarts it - so you can never
start over in the state where no X servers are running.  This ia real
problem since the only way to fully test the configuration files is to
reboot (gross!)

Here's a piece of gdm.conf showing how the system is set up:

[servers]
# VT7 Layout Seat2
0=First
# VT7 Layout Seat1
1=Second

# Also note, that if you redefine a [server-foo] section, then GDM will
# use the definition in this file, not the GDM System Defaults configuration
# file.  It is currently not possible to disable a [server-foo] section
# defined in the GDM System Defaults configuration file.
#
#[server-Standard]
#name=Standard server
#command=/usr/X11R6/bin/X -audit 0
#chooser=false
#handled=true
#flexible=true
#priority=0

[server-First]
name=Server 1
command=/usr/X11R6/bin/X2 -audit 0 -novtswitch -sharevts -layout Seat2
flexible=false

[server-Second]
name=Server 2
command=/usr/X11R6/bin/X1 -audit 0 -layout Seat1
flexible=true


-- System Information:
Debian Release: 5.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-1-686 (SMP w/1 CPU core)
Locale: LANG=en_CA, LC_CTYPE=en_CA (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/bash

Versions of packages gdm depends on:
ii  adduser                3.110             add and remove users and groups
ii  debconf [debconf-2.0]  1.5.24            Debian configuration
management sy
ii  gksu                   2.0.0-6           graphical frontend to su
ii  gnome-session [x-sessi 2.22.3-2          The GNOME 2 Session Manager
ii  gnome-terminal [x-term 2.22.3-3          The GNOME 2 terminal
emulator appl
ii  konsole [x-terminal-em 4:3.5.9.dfsg.1-6  X terminal emulator for KDE
ii  ksmserver [x-session-m 4:3.5.9.dfsg.1-6  session manager for KDE
ii  kwin [x-window-manager 4:3.5.9.dfsg.1-6  the KDE window manager
ii  libart-2.0-2           2.3.20-2          Library of functions for 2D
graphi
ii  libatk1.0-0            1.22.0-1          The ATK accessibility toolkit
ii  libattr1               1:2.4.43-1        Extended attribute shared
library
ii  libc6                  2.7-16            GNU C Library: Shared libraries
ii  libcairo2              1.6.4-7           The Cairo 2D vector
graphics libra
ii  libdbus-1-3            1.2.1-4           simple interprocess
messaging syst
ii  libdbus-glib-1-2       0.76-1            simple interprocess
messaging syst
ii  libdmx1                1:1.0.2-3         X11 Distributed Multihead
extensio
ii  libfontconfig1         2.6.0-3           generic font configuration
library
ii  libfreetype6           2.3.7-2           FreeType 2 font engine,
shared lib
ii  libglade2-0            1:2.6.2-1         library to load .glade
files at ru
ii  libglib2.0-0           2.16.6-1          The GLib library of C routines
ii  libgnomecanvas2-0      2.20.1.1-1        A powerful object-oriented
display
ii  libgtk2.0-0            2.12.11-4         The GTK+ graphical user
interface
ii  libpam-modules         1.0.1-4           Pluggable Authentication
Modules f
ii  libpam-runtime         1.0.1-4           Runtime support for the PAM
librar
ii  libpam0g               1.0.1-4           Pluggable Authentication
Modules l
ii  libpango1.0-0          1.20.5-3          Layout and rendering of
internatio
ii  librsvg2-2             2.22.2-2lenny1    SAX-based renderer library
for SVG
ii  librsvg2-common        2.22.2-2lenny1    SAX-based renderer library
for SVG
ii  libselinux1            2.0.65-5          SELinux shared libraries
ii  libwrap0               7.6.q-16          Wietse Venema's TCP
wrappers libra
ii  libx11-6               2:1.1.5-2         X11 client-side library
ii  libxau6                1:1.0.3-3         X11 authorisation library
ii  libxdmcp6              1:1.0.2-3         X11 Display Manager Control
Protoc
ii  libxext6               2:1.0.4-1         X11 miscellaneous extension
librar
ii  libxi6                 2:1.1.4-1         X11 Input extension library
ii  libxinerama1           2:1.0.3-2         X11 Xinerama extension library
ii  libxml2                2.6.32.dfsg-5     GNOME XML library
ii  lsb-base               3.2-20            Linux Standard Base 3.2
init scrip
ii  metacity [x-window-man 1:2.22.0-2        A lightweight GTK2 based
Window Ma
ii  xterm [x-terminal-emul 235-1             X terminal emulator
ii  zlib1g                 1:1.2.3.3.dfsg-12 compression library - runtime

Versions of packages gdm recommends:
ii  gdm-themes                   0.6.1       Themes for the GNOME
Display Manag
ii  whiptail                     0.52.2-11.3 Displays user-friendly
dialog boxe
ii  xnest                        2:1.4.2-9   Nested X server
ii  xserver-xorg                 1:7.3+18    the X.Org X server
ii  zenity                       2.22.1-2    Display graphical dialog
boxes fro

Versions of packages gdm suggests:
ii  libpam-gnome-keyring          2.22.3-2   PAM module to unlock the
GNOME key
ii  locales                       2.7-16     GNU C Library: National
Language (
ii  pm-utils                      1.1.2.4-1  utilities and scripts for
power ma

-- debconf information:
  gdm/daemon_name: /usr/bin/gdm
* shared/default-x-display-manager: gdm

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