Public bug reported:
I got these tracebacks during the install of some updates on Xubuntu
26.04:
~$ update-manager
WARNING:root:can not import unity GI Namespace Dbusmenu not available
ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 263, in
maybe_handle_message
self._handler(*args, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 90, in _on_network_state_changed
self._update_3g_state()
~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 96, in _update_3g_state
on_3g = nm.is_active_connection_gsm_or_cdma()
File "/usr/lib/python3/dist-packages/UpdateManager/Core/roam.py", line 174,
in is_active_connection_gsm_or_cdma
actives = self.get_dbus_property(
self.proxy, self.NM_DBUS_IFACE, "ActiveConnections"
)
File "/usr/lib/python3/dist-packages/UpdateManager/Core/roam.py", line 169,
in get_dbus_property
property = props.Get(interface, property)
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 72, in __call__
return self._proxy_method(*args, **keywords)
~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 141, in __call__
return self._connection.call_blocking(self._named_service,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^
self._object_path,
^^^^^^^^^^^^^^^^^^
...<3 lines>...
args,
^^^^^
**keywords)
^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 696, in
call_blocking
reply_message = self.send_message_with_reply_and_block(
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Message
recipient disconnected from message bus without replying
ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 173, in
activate_name_owner
return self.get_name_owner(bus_name)
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 348, in get_name_owner
return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH,
~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
BUS_DAEMON_IFACE, 'GetNameOwner',
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
's', (bus_name,))
^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 696, in
call_blocking
reply_message = self.send_message_with_reply_and_block(
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NameHasNoOwner: Could
not get owner of name 'org.freedesktop.NetworkManager': no such name
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 263, in
maybe_handle_message
self._handler(*args, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 90, in _on_network_state_changed
self._update_3g_state()
~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 95, in _update_3g_state
nm = NetworkManagerHelper()
File "/usr/lib/python3/dist-packages/UpdateManager/Core/roam.py", line 162,
in __init__
self.proxy = self.bus.get_object(
~~~~~~~~~~~~~~~~~~~^
"org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 237, in get_object
return self.ProxyObjectClass(self, bus_name, object_path,
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
introspect=introspect,
^^^^^^^^^^^^^^^^^^^^^^
follow_name_owner_changes=follow_name_owner_changes)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 250, in __init__
self._named_service = conn.activate_name_owner(bus_name)
~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 178, in
activate_name_owner
self.start_service_by_name(bus_name)
~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 273, in
start_service_by_name
return (True, self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH,
~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
BUS_DAEMON_IFACE,
^^^^^^^^^^^^^^^^^
'StartServiceByName',
^^^^^^^^^^^^^^^^^^^^^
'su', (bus_name, flags)))
^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 696, in
call_blocking
reply_message = self.send_message_with_reply_and_block(
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The
name org.freedesktop.NetworkManager was not provided by any .service files
---
ProblemType: Bug
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: LXQt
DistroRelease: Ubuntu 26.04
GsettingsChanges:
b'com.ubuntu.update-manager' b'launch-count' b'1'
b'com.ubuntu.update-manager' b'launch-time' b'int64 1760725034'
InstallationDate: Installed on 2025-09-09 (97 days ago)
InstallationMedia: Lubuntu 25.04 "Plucky Puffin" - Release amd64 (20250417)
Package: update-manager 1:25.10.1
PackageArchitecture: all
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
RebootRequiredPkgs: Error: path contained symlinks.
Tags: resolute
Uname: Linux 6.17.0-6-generic x86_64
UpgradeStatus: Upgraded to resolute on 2025-10-17 (59 days ago)
UserGroups: N/A
_MarkForUpload: True
mtime.conffile..etc.apport.crashdb.conf: 2025-12-13T23:32:16.322793
** Affects: update-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-collected resolute
** Tags added: apport-collected resolute
** Description changed:
I got these tracebacks during the install of some updates on Xubuntu
26.04:
~$ update-manager
WARNING:root:can not import unity GI Namespace Dbusmenu not available
ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 263, in
maybe_handle_message
self._handler(*args, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 90, in _on_network_state_changed
self._update_3g_state()
~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 96, in _update_3g_state
on_3g = nm.is_active_connection_gsm_or_cdma()
File "/usr/lib/python3/dist-packages/UpdateManager/Core/roam.py", line 174,
in is_active_connection_gsm_or_cdma
actives = self.get_dbus_property(
self.proxy, self.NM_DBUS_IFACE, "ActiveConnections"
)
File "/usr/lib/python3/dist-packages/UpdateManager/Core/roam.py", line 169,
in get_dbus_property
property = props.Get(interface, property)
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 72, in __call__
return self._proxy_method(*args, **keywords)
~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 141, in __call__
return self._connection.call_blocking(self._named_service,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^
self._object_path,
^^^^^^^^^^^^^^^^^^
...<3 lines>...
args,
^^^^^
**keywords)
^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 696, in
call_blocking
reply_message = self.send_message_with_reply_and_block(
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Message
recipient disconnected from message bus without replying
ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 173, in
activate_name_owner
return self.get_name_owner(bus_name)
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 348, in
get_name_owner
return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH,
~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
BUS_DAEMON_IFACE, 'GetNameOwner',
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
's', (bus_name,))
^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 696, in
call_blocking
reply_message = self.send_message_with_reply_and_block(
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NameHasNoOwner:
Could not get owner of name 'org.freedesktop.NetworkManager': no such name
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 263, in
maybe_handle_message
self._handler(*args, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 90, in _on_network_state_changed
self._update_3g_state()
~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/UpdateManager/Core/AlertWatcher.py",
line 95, in _update_3g_state
nm = NetworkManagerHelper()
File "/usr/lib/python3/dist-packages/UpdateManager/Core/roam.py", line 162,
in __init__
self.proxy = self.bus.get_object(
~~~~~~~~~~~~~~~~~~~^
"org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 237, in get_object
return self.ProxyObjectClass(self, bus_name, object_path,
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
introspect=introspect,
^^^^^^^^^^^^^^^^^^^^^^
follow_name_owner_changes=follow_name_owner_changes)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 250, in __init__
self._named_service = conn.activate_name_owner(bus_name)
~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 178, in
activate_name_owner
self.start_service_by_name(bus_name)
~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 273, in
start_service_by_name
return (True, self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH,
~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
BUS_DAEMON_IFACE,
^^^^^^^^^^^^^^^^^
'StartServiceByName',
^^^^^^^^^^^^^^^^^^^^^
'su', (bus_name, flags)))
^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 696, in
call_blocking
reply_message = self.send_message_with_reply_and_block(
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The
name org.freedesktop.NetworkManager was not provided by any .service files
+ ---
+ ProblemType: Bug
+ ApportVersion: 2.33.1-0ubuntu3
+ Architecture: amd64
+ CasperMD5CheckResult: unknown
+ CurrentDesktop: LXQt
+ DistroRelease: Ubuntu 26.04
+ GsettingsChanges:
+ b'com.ubuntu.update-manager' b'launch-count' b'1'
+ b'com.ubuntu.update-manager' b'launch-time' b'int64 1760725034'
+ InstallationDate: Installed on 2025-09-09 (97 days ago)
+ InstallationMedia: Lubuntu 25.04 "Plucky Puffin" - Release amd64 (20250417)
+ Package: update-manager 1:25.10.1
+ PackageArchitecture: all
+ ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
+ RebootRequiredPkgs: Error: path contained symlinks.
+ Tags: resolute
+ Uname: Linux 6.17.0-6-generic x86_64
+ UpgradeStatus: Upgraded to resolute on 2025-10-17 (59 days ago)
+ UserGroups: N/A
+ _MarkForUpload: True
+ mtime.conffile..etc.apport.crashdb.conf: 2025-12-13T23:32:16.322793
--
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https://bugs.launchpad.net/bugs/2136201
Title:
dbus errors while upgrading on Xubuntu 26.04
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