[Bug 1904878] Re: update-manager crashed with dbus.exceptions.DBusException in update(): org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1

[Sebastien Bacher]

Thank you for your bug report, it sounds like that could be an issue
with the python 3.8 to 3.9 transition

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https://bugs.launchpad.net/bugs/1904878

Title:
  update-manager crashed with dbus.exceptions.DBusException in update():
  org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited
  with unknown return code 1

Status in update-manager package in Ubuntu:
  New

Bug description:
  Got the bug in a new install. Started software-updater the first thing after the installation.
  Got 2 bugs 1904217, probably a private bug as I don't have permission o see it, and this bug.
  There is also the bug 1904866, which is similar to this and also bug 1063589.

  ProblemType: Crash
  DistroRelease: Ubuntu 21.04
  Package: update-manager 1:20.10.1
  ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
  Uname: Linux 5.8.0-25-generic x86_64
  ApportVersion: 2.20.11-0ubuntu51
  Aptdaemon:
   
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashCounter: 1
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Nov 19 14:03:40 2020
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'launch-count' b'1'
   b'com.ubuntu.update-manager' b'launch-time' b'int64 1605791019'
  InstallationDate: Installed on 2020-11-19 (0 days ago)
  InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20201119)
  InterpreterPath: /usr/bin/python3.8
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/bin/update-manager
  Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-1
  PythonArgs: ['/usr/bin/update-manager']
  PythonDetails: N/A
  SourcePackage: update-manager
  Title: update-manager crashed with dbus.exceptions.DBusException in update(): org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo

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