Hi, migrating from sysV to systemd I ran into some issues with random behavior of session bus availability. The setup is as follows:
systemd starts a service which starts an x-session like this: [Unit] Description=Master Process After=systemd-user-sessions.service systemd-udedvd.service dbus.service [Service] User=xyzuser Environment=DISPLAY=:0.0 ExecStart=/usr/bin/sudo -b -u xyzuser -i /usr/bin/startx /usr/bin/master Type=forking [Install] WantedBy=multi-user.target Master then starts some other processes which all start after one after another upon their appearance on the session bus, i.e. process1 is started as soon as process0 appears on the session bus with its well known name. This approach used to work reliably under sysV. Moving to systemd it seems that there are some timing issues which result in an random failure of the approach. The reason for that failure is that sometimes process1 does not properly appear with it's name on the session bus. As a result the subsequent processes do not start. Loaded: loaded (/lib/systemd/system/master.service; enabled) Active: active (running) since Fri 2014-08-08 08:16:50 CEST; 17min ago Process: 519 ExecStart=/usr/bin/sudo -b -u xyzuser -i /usr/bin/startx /usr/bin/master (code=exited, status=0/SUCCESS) Main PID: 544 (sudo) CGroup: /system.slice/master.service ├─544 /usr/bin/sudo -b -u xyzuser -i /usr/bin/startx /usr/bin/master ├─555 /bin/sh /usr/bin/startx /usr/bin/master ├─860 xinit /usr/bin/master -- /etc/X11/xinit/xserverrc :0 -auth /tmp/serverauth.VP0SdUCg... ├─861 /usr/bin/X -nolisten tcp :0 -auth /tmp/serverauth.VP0SdUCgVO ├─867 python /usr/bin/master ├─871 /usr/bin/dbus-launch --autolaunch fbf381267b161fcf27363a6453d687d7 --binary-syntax --... ├─872 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session ├─873 /usr/bin/python2.7 /usr/bin/process0 └─882 /usr/bin/process1 As the approach used to work with sysV it seems I'm missing some point with the session bus setup under systemd. Any idea how to fix this or to get to the root cause is highly appreciated. -- tomw <t...@ubilix.com> _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel