[Pkg-xfce-devel] Bug#814760: randomly fails to start

[Eduard Bloch]

Package: lightdm
Version: 1.16.6-1
Severity: normal

Sometimes, about once a month, lightdm fails to start on boot and I see
just the console. I had a closer this time, those are the logs:

$ journalctl -b -1 -u lightdm
-- Logs begin at Mo 2015-07-27 19:58:37 CEST, end at Mo 2016-02-15 09:09:43 CET. --
Feb 15 09:06:58 zombie systemd[1]: Starting Light Display Manager...
Feb 15 09:06:58 zombie systemd[1]: Started Light Display Manager.
Feb 15 09:06:58 zombie lightdm[4635]: ** (lightdm:4635): CRITICAL **: session_get_login1_session_id: assertion 'session != NULL' failed
Feb 15 09:06:59 zombie lightdm[4665]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Feb 15 09:07:05 zombie systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE
Feb 15 09:07:05 zombie systemd[1]: Stopped Light Display Manager.
Feb 15 09:07:05 zombie systemd[1]: lightdm.service: Unit entered failed state.
Feb 15 09:07:05 zombie systemd[1]: lightdm.service: Failed with result 'exit-code'.
Feb 15 09:07:05 zombie systemd[1]: lightdm.service: Service hold-off time over, scheduling restart.
Feb 15 09:07:05 zombie systemd[1]: lightdm.service: Failed to schedule restart job: Transaction is destructive.
Feb 15 09:07:05 zombie systemd[1]: lightdm.service: Unit entered failed state.
Feb 15 09:07:05 zombie systemd[1]: lightdm.service: Failed with result 'resources'.


And some context around the error message:

Feb 15 09:06:58 zombie systemd[1]: Starting Accounts Service...
Feb 15 09:06:58 zombie console-kit-daemon[3928]: (process:4649): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
Feb 15 09:06:58 zombie console-kit-daemon[3928]: (process:4655): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
Feb 15 09:06:58 zombie console-kit-daemon[3928]: (process:4656): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
Feb 15 09:06:58 zombie accounts-daemon[4643]: started daemon version 0.6.40
Feb 15 09:06:58 zombie dbus[1908]: [system] Successfully activated service 'org.freedesktop.Accounts'
Feb 15 09:06:58 zombie systemd[1]: Started Accounts Service.
Feb 15 09:06:58 zombie lightdm[4635]: ** (lightdm:4635): CRITICAL **: session_get_login1_session_id: assertion 'session != NULL' failed
Feb 15 09:06:59 zombie lightdm[4665]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Feb 15 09:06:59 zombie systemd[1]: Created slice User Slice of lightdm.
Feb 15 09:06:59 zombie systemd[1]: lvm2-lvmpolld.socket: Cannot add dependency job, ignoring: Unit lvm2-lvmpolld.socket is masked.
Feb 15 09:06:59 zombie systemd[1]: lvm2-lvmetad.socket: Cannot add dependency job, ignoring: Unit lvm2-lvmetad.socket is masked.
Feb 15 09:06:59 zombie systemd[1]: lvm2-monitor.service: Cannot add dependency job, ignoring: Unit lvm2-monitor.service is masked.
Feb 15 09:06:59 zombie systemd[1]: Starting User Manager for UID 160...
Feb 15 09:06:59 zombie systemd-logind[3902]: New session c1 of user lightdm.
Feb 15 09:06:59 zombie systemd[1]: Started Session c1 of user lightdm.
Feb 15 09:06:59 zombie systemd[4668]: pam_unix(systemd-user:session): session opened for user lightdm by (uid=0)


Also note that this comes quite late, I was logged on console in by that time.

Regards,
Eduard.

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.0+ (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: sysvinit (via /sbin/init)

Versions of packages lightdm depends on:
ii  adduser                                3.113+nmu3
ii  consolekit                             0.4.6-5
ii  dbus                                   1.10.6-1
ii  debconf [debconf-2.0]                  1.5.58
ii  libaudit1                              1:2.4.5-1
ii  libc6                                  2.21-7
ii  libgcrypt20                            1.6.4-5
ii  libglib2.0-0                           2.46.2-3
ii  libpam-systemd                         228-4+b1
ii  libpam0g                               1.1.8-3.2
ii  libxcb1                                1.11.1-1
ii  libxdmcp6                              1:1.1.2-1.1
ii  lightdm-gtk-greeter [lightdm-greeter]  2.0.1-2

Versions of packages lightdm recommends:
ii  xserver-xorg  1:7.7+13

Versions of packages lightdm suggests:
ii  accountsservice  0.6.40-3
ii  upower           0.99.3-1+b2

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

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