Am Freitag, den 22.06.2012, 15:35 +0100 schrieb Léo Gillot-Lamure: > Simple suggestion : GDM takes a name on the bus, so you can reliably > know when the service has finished to start. The service file used in > Gentoo adds a line "BusName=org.gnome.DisplayManager" in the [Service] > section to achieve that.
Thanks. Gentoo’s service file looks like this [1]
1 [Unit]
2 Description=GNOME Display Manager
3 After=systemd-user-sessions.service
4
5 [Service]
6 ExecStart=/usr/bin/gdm --nodaemon
7 Type=dbus
8 BusName=org.gnome.DisplayManager
9
10 [Install]
11 WantedBy=graphical.target
and here again Arch Linux’ for comparison.
$ more service/gdm.service
[Unit]
Description=Gnome Display Manager
After=systemd-user-sessions.service
[Service]
ExecStart=/usr/sbin/gdm -nodaemon
[Install]
WantedBy=graphical.target
So Lennart, which one would you prefer?
Adapting the path to `/usr/sbin/gdm3` in Gentoo’s one and saving it
under `/lib/systemd/service/gdm3.service` it works under Debian after
`sudo systemctl enable gdm3.service`.
Although reading Jordi’s post [2],
As we get many questions regarding the status of GDM in Debian,
let's add a short note on this. Packaging GDM, at least in its
current upstream form, is not a matter of unpacking a new
tarball and editing debian/changelog. When Joss works on a new
major version, the amount of tweaking to break away from stuff
that works on other distros but is not so simple in Debian is
outstanding (see, for example, the current unfinished work for
GDM 3.2 in our SVN repo). In our case, to handle our GDM
defaults, we even need changes to the underlying configuration
system, dconf. This evidently takes some effort to do, and
unfortunately our GDM expert has had little time for Debian
lately, but we're confident we'll end up with a GDM in wheezy
that is on par with Debian standards.
and looking at Debian’s GDM init.d script [2]
1 #! /bin/sh
2 ### BEGIN INIT INFO
3 # Provides: gdm3
4 # Should-Start: console-screen dbus network-manager
5 # Required-Start: $local_fs $remote_fs
6 # Required-Stop: $local_fs $remote_fs
7 # Default-Start: 2 3 4 5
8 # Default-Stop: 0 1 6
9 # Short-Description: GNOME Display Manager
10 # Description: Debian init script for the GNOME Display Manager
11 ### END INIT INFO
12 #
13 # Author: Ryan Murray <rmur...@debian.org>
14 #
15 set -e
16
17 PATH=/sbin:/bin:/usr/sbin:/usr/bin
18 DAEMON=/usr/sbin/gdm3
19
20 test -x $DAEMON || exit 0
21
22 if [ -r /etc/default/locale ]; then
23 . /etc/default/locale
24 export LANG LANGUAGE
25 fi
26
27 . /lib/lsb/init-functions
28
29 # To start gdm even if it is not the default display manager, change
30 # HEED_DEFAULT_DISPLAY_MANAGER to "false."
31 HEED_DEFAULT_DISPLAY_MANAGER=true
32 DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
33
34 gen_config() {
35 # GSettings configuration uses dconf update to generate a gdm profile
36 if [ -d /var/lib/gdm3 ]; then
37 needed=no
38 if [ -f /var/lib/gdm3/dconf/db/gdm ]; then
39 for f in \
40 /usr/share/gdm/dconf /usr/share/gdm/dconf/*-settings \
41 /usr/share/gdm/dconf/locks /usr/share/gdm/dconf/locks/*-locks
\
42 /etc/gdm3/greeter.gsettings; do
43 if [ "$f" -nt /var/lib/gdm3/dconf/db/gdm ]; then
44 needed=yes
45 break
46 fi
47 done
48 else
49 needed=yes
50 fi
51 if [ "$needed" = yes ]; then
52 rm -rf /var/lib/gdm3/dconf
53 mkdir -p /var/lib/gdm3/dconf/profile
/var/lib/gdm3/dconf/db/gdm.d/locks
54 ln -s /usr/share/gdm/dconf-profile /var/lib/gdm3/dconf/profile/gdm
55 ln -s /usr/share/gdm/dconf/*-settings
/var/lib/gdm3/dconf/db/gdm.d/
56 ln -s /usr/share/gdm/dconf/locks/*-locks
/var/lib/gdm3/dconf/db/gdm.d/locks/
57 # The configuration file in /etc uses org.gnome.blah gsettings
syntax.
58 # Convert it to org/gnome/blah dconf syntax.
59 awk '/\[.*\]/ { gsub("\\.","/"); } ! /^#/ { print;}' \
60 /etc/gdm3/greeter.gsettings >
/var/lib/gdm3/dconf/db/gdm.d/90-debian-settings
61 dconf update /var/lib/gdm3/dconf/db 2> /dev/null
62 fi
63 fi
64 }
65
66 case "$1" in
67 start)
68 CONFIGURED_DAEMON=$(basename "$(cat
$DEFAULT_DISPLAY_MANAGER_FILE 2> /dev/null)")
69 if grep -wqs text /proc/cmdline; then
70 log_warning_msg "Not starting GNOME Display Manager; found
'text' in kernel commandline."
71 elif [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ] && \
72 [ "$HEED_DEFAULT_DISPLAY_MANAGER" = "true" ] && \
73 [ "$CONFIGURED_DAEMON" != gdm3 ] ; then
74 log_action_msg "Not starting GNOME Display Manager; it
is not the default display manager"
75 else
76 log_daemon_msg "Starting GNOME Display Manager" "gdm3"
77 gen_config
78 rm -f /var/lib/gdm/.ICEauthority
79 start-stop-daemon --start --quiet --pidfile
/var/run/gdm3.pid \
80 --background --exec $DAEMON || log_end_msg 1
81 log_end_msg 0
82 fi
83 ;;
84 stop)
85 log_daemon_msg "Stopping GNOME Display Manager" "gdm3"
86 set +e
87 start-stop-daemon --stop --quiet --pidfile /var/run/gdm3.pid \
88 --name gdm3 --retry 5
89 set -e
90 log_end_msg $?
91 ;;
92 reload)
93 log_daemon_msg "Scheduling reload of GNOME Display Manager
configuration" "gdm3"
94 set +e
95 gen_config
96 start-stop-daemon --stop --signal USR1 --quiet --pidfile \
97 /var/run/gdm3.pid --name gdm3
98 start-stop-daemon --stop --signal HUP --quiet --name
dconf-service \
99 --user Debian-gdm --oknodo
100 set -e
101 log_end_msg $?
102 ;;
103 status)
104 status_of_proc -p "$PIDFILE" "$DAEMON" gdm3 && exit 0 || exit $?
105 ;;
106 restart|force-reload)
107 $0 stop
108 $0 start
109 ;;
110 *)
111 echo "Usage: /etc/init.d/gdm3
{start|stop|restart|reload|force-reload|status}"
112 exit 1
113 ;;
114 esac
115
116 exit 0
there seems to be a chance the above service file might break under
Debian.
As a last note, looking at `systemd-analyze blame` it looks like
starting GDM 3 using the service file takes longer (188 ms) than when
systemd is using the shipped init.d script (90 ms to 120 ms).
Thanks,
Paul
[1]
http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/gnome-base/gdm/files/3.2.1.1/gdm.service?revision=1.1&view=markup
[2] http://oskuro.net/blog/freesoftware/gnome-3.4-wheezy-2012-06-03-09-47
[3]
http://anonscm.debian.org/viewvc/pkg-gnome/desktop/unstable/gdm3/debian/gdm3.init?revision=35286&view=markup
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