[Bug 1553466] Re: org.gnome.SessionManager was not provided by any .service files

[Adalbert Hanßen]

Today, on my Xubuntu system

Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.4 LTS
Release:	20.04
Codename:	focal
5.13.0-37-generic x86_64


I saw the error message from the headline of this bug report in /var/log/apport.log:

ERROR: apport (pid 27563) Mon Mar 28 11:45:22 2022: called for pid 1770, signal 11, core limit 0, dump mode 1
ERROR: apport (pid 27563) Mon Mar 28 11:45:23 2022: executable: /usr/bin/xfce4-power-manager (command line "xfce4-power-manager")
ERROR: apport (pid 27563) Mon Mar 28 11:45:23 2022: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 27563) Mon Mar 28 11:45:23 2022: debug: session gdbus call: 
ERROR: apport (pid 27563) Mon Mar 28 11:45:24 2022: wrote report /var/crash/_usr_bin_xfce4-power-manager.1000.crash

This occurred on a special installation on my "yellow" USB3 stick
(instead of the built-in SSD) that I have made for maintenance purposes.

Do I need to worry about the error message?

Is it possible that this is why the boot process from the stick takes so
long?

Trying to find the reason why the boot process takes 2:45 minutes with
the screen being black for 1:30 minutes was the reason for me to look
for error messages in `/var/log` and on this occasion I came across the
error message.

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https://bugs.launchpad.net/bugs/1553466

Title:
  org.gnome.SessionManager was not provided by any .service files

Status in dbus package in Ubuntu:
  Confirmed

Bug description:
  This is logged into journalctl:

   org.gnome.ScreenSaver[1755]: ** (gnome-screensaver:1868): WARNING **:
  Couldn't get presence status: The name org.gnome.SessionManager was
  not provided by any .service files

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: dbus 1.10.6-1ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
  Uname: Linux 4.4.0-10-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Mar  5 08:37:25 2016
  ExecutablePath: /usr/bin/dbus-daemon
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: dbus
  UpgradeStatus: No upgrade log present (probably fresh install)
  upstart.dbus.log:
   Activating service name='org.gnome.Terminal'
   Successfully activated service 'org.gnome.Terminal'
   Activating service name='org.gnome.Terminal'
   Successfully activated service 'org.gnome.Terminal'

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