[Bug 1827516] Re: unattended-upgrade-shutdown: ModuleNotFoundError: No module named '_dbus_bindings

[Balint Reczey]

It seems to be common in the error reports that the Python 3 version running unattended-upgrades is not compatible with the python3-dbus package.
Either because the system is running Python 3.6 on Xenial with python3-dbus compiled to support only 3.5 or because the system is upgraded to Bionic and python3-dbus is not upgraded to the version compiled with 3.6.

** Summary changed:

- /usr/share/unattended-upgrades/unattended-upgrade-shutdown:ModuleNotFoundError:/usr/share/unattended-upgrades/unattended-upgrade-shutdown at 28:/usr/lib/python3/dist-packages/dbus/__init__.py at 82:/usr/lib/python3/dist-packages/dbus/types.py at 6
+ unattended-upgrade-shutdown: ModuleNotFoundError: No module named '_dbus_bindings

** Description changed:

  The Ubuntu Error Tracker has been receiving reports about a problem regarding unattended-upgrades.  This problem was most recently seen with package version 1.1ubuntu1.18.04.9, the problem page at https://errors.ubuntu.com/problem/aed6c392ed81ed052ff251ef1c387f22b0ad1884 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
  If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.
+ 
+ Traceback (most recent call last):
+   File "/usr/share/unattended-upgrades/unattended-upgrade-shutdown", line 28, in <module>
+     import dbus
+   File "/usr/lib/python3/dist-packages/dbus/__init__.py", line 82, in <module>
+     import dbus.types as types
+   File "/usr/lib/python3/dist-packages/dbus/types.py", line 6, in <module>
+     from _dbus_bindings import (
+ ModuleNotFoundError: No module named '_dbus_bindings'

** Changed in: unattended-upgrades (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1827516

Title:
  unattended-upgrade-shutdown: ModuleNotFoundError: No module named
  '_dbus_bindings

Status in unattended-upgrades package in Ubuntu:
  Invalid

Bug description:
  The Ubuntu Error Tracker has been receiving reports about a problem regarding unattended-upgrades.  This problem was most recently seen with package version 1.1ubuntu1.18.04.9, the problem page at https://errors.ubuntu.com/problem/aed6c392ed81ed052ff251ef1c387f22b0ad1884 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
  If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.

  Traceback (most recent call last):
    File "/usr/share/unattended-upgrades/unattended-upgrade-shutdown", line 28, in <module>
      import dbus
    File "/usr/lib/python3/dist-packages/dbus/__init__.py", line 82, in <module>
      import dbus.types as types
    File "/usr/lib/python3/dist-packages/dbus/types.py", line 6, in <module>
      from _dbus_bindings import (
  ModuleNotFoundError: No module named '_dbus_bindings'

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