Summary: twice, bug happened when service org.gtk.vfs.Daemon is activating *after* org.a11y.atspi.Registry is activated.
Details below. Bug just happened again on unlocking session (versus switching users). I compared the output of journalctl. ## Around unlock time: nothing to see Around unlock time, journalctl only shows lightdm cleanup activity. Then, only when bug happens, lightdm starts again the whole sequence : systemd[somepid]: Starting User Manager for UID 110... systemd-logind[749]: New session c9 of user lightdm. systemd[somepid]: Started Session c9 of user lightdm. ... ## Around lock time: same correlation between log order and bug occurrence Again Indeed, bug happens when log is in this order: at-spi-bus-launcher[25560]: dbus-daemon[25565]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=110 pid=25557 comm="/usr/sbin/lightdm-gtk-greeter " label="unconfined") at-spi-bus-launcher[25560]: dbus-daemon[25565]: Successfully activated service 'org.a11y.atspi.Registry' at-spi-bus-launcher[25560]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry dbus-daemon[25559]: [session uid=110 pid=25559] Activating via systemd: service name='org.gtk.vfs.Daemon' unit='gvfs-daemon.service' requested by ':1.4' (uid=110 pid=25557 comm="/usr/sbin/lightdm-gtk-greeter " label="unconfined") and things go smoothly when log is in this order: at-spi-bus-launcher[15685]: dbus-daemon[15690]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=110 pid=15682 comm="/usr/sbin/lightdm-gtk-greeter " label="unconfined") dbus-daemon[15684]: [session uid=110 pid=15684] Activating via systemd: service name='org.gtk.vfs.Daemon' unit='gvfs-daemon.service' requested by ':1.3' (uid=110 pid=15682 comm="/usr/sbin/lightdm-gtk-greeter " label="unconfined") at-spi-bus-launcher[15685]: dbus-daemon[15690]: Successfully activated service 'org.a11y.atspi.Registry' at-spi-bus-launcher[15685]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry Summary: twice, bug happened when service org.gtk.vfs.Daemon is activating *after* org.a11y.atspi.Registry is activated. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1776475 Title: Unlocking existing session often requires several attempts. Status in lightdm package in Ubuntu: New Bug description: # Context * Computer with several X sessions opened. * Users switching from one opened session to another. * Lightdm opens new greeter, wait for typing password. * User types password. * Password is accepted. * System closes the current greeter (screen gets black for an instant). # Expected * User gets back to their already opened session. # Observed * System immediately opens another greeter. * User has to type password again. # Reproducible * Not always. At times, often, at other times, rare. # Additional information Users switch session via dm-tool switch-to-user $OTHERUSER but I guess bug appears with other means (like menu item like "lock screen", etc). # Information requested lsb_release -rd Description: Ubuntu 18.04 LTS Release: 18.04 LC_ALL=C apt-cache policy lightdm lightdm: Installed: 1.26.0-0ubuntu1 Candidate: 1.26.0-0ubuntu1 Version table: *** 1.26.0-0ubuntu1 500 500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: lightdm 1.26.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18 Uname: Linux 4.15.0-23-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 Date: Tue Jun 12 14:14:52 2018 ExecutablePath: /usr/sbin/lightdm InstallationDate: Installed on 2018-05-25 (18 days ago) InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) ProcEnviron: LANG=fr_FR.UTF-8 PATH=(custom, no user) SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.logrotate.d.lightdm: [modified] mtime.conffile..etc.logrotate.d.lightdm: 2018-05-25T06:19:22.081830 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1776475/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp