Public bug reported:

1) lsb_release -rd
No LSB modules are available.
Description:    Ubuntu Noble Numbat (development branch)
Release:        24.04

2) apt-cache policy update-manager
update-manager:
  Installed: 1:24.04.6
  Candidate: 1:24.04.6
  Version table:
 *** 1:24.04.6 500
        500 http://au.archive.ubuntu.com/ubuntu noble/main amd64 Packages
        500 http://au.archive.ubuntu.com/ubuntu noble/main i386 Packages
        100 /var/lib/dpkg/status


3) expected it to do a partial upgrade on clicking the "partial upgrade" button

4) crashes with the following messages

$ sudo update-manager

(update-manager:497814): dconf-WARNING **: 10:29:23.723: failed to
commit changes to dconf: Failed to execute child process “dbus-launch”
(No such file or directory)

(update-manager:497814): dconf-WARNING **: 10:29:23.723: failed to
commit changes to dconf: Failed to execute child process “dbus-launch”
(No such file or directory)

(update-manager:497814): libunity-CRITICAL **: 10:29:23.731: file unity-
launcher.c: line 1638: unexpected error: Failed to execute child process
“dbus-launch” (No such file or directory) (g-exec-error-quark, 8)

(update-manager:497814): libunity-CRITICAL **: 10:29:23.731:
unity_launcher_entry_dbus_impl_construct: assertion 'conn != NULL'
failed

(update-manager:497814): libunity-CRITICAL **: 10:29:23.735: 
unity-inspector.vala:96: Unable to connect to session bus: Failed to execute 
child process “dbus-launch” (No such file or directory)
warning: could not initiate dbus
/usr/lib/python3/dist-packages/uaclient/apt.py:288: Warning: W:Unable to read 
/var/lib/ubuntu-advantage/apt-esm/etc/apt/apt.conf.d/ - DirectoryExists (2: No 
such file or directory)
  apt_pkg.init()
/usr/lib/python3/dist-packages/uaclient/apt.py:270: Warning: W:Unable to read 
/var/lib/ubuntu-advantage/apt-esm/etc/apt/preferences.d/ - DirectoryExists (2: 
No such file or directory)
  apt_pkg.init_system()
ERROR:root:not handled exception:
Traceback (most recent call last):

  File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 114, in 
<module>
    controller.doPartialUpgrade()

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", 
line 2609, in doPartialUpgrade
    self.prepare()

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", 
line 465, in prepare
    if not self._pythonSymlinkCheck():
           ^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", 
line 415, in _pythonSymlinkCheck
    config.readfp(f)
    ^^^^^^^^^^^^^

AttributeError: 'ConfigParser' object has no attribute 'readfp'. Did you
mean: 'read'?

Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeViewGtk3.py", 
line 540, in _handleException
    apport_crash(type, value, tb)
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeApport.py", line 
57, in apport_crash
    apport_excepthook(type, value, tb)
TypeError: apport_excepthook() missing 1 required positional argument: 'exc_tb'

Original exception was:
Traceback (most recent call last):
  File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 114, in 
<module>
    controller.doPartialUpgrade()
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", 
line 2609, in doPartialUpgrade
    self.prepare()
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", 
line 465, in prepare
    if not self._pythonSymlinkCheck():
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", 
line 415, in _pythonSymlinkCheck
    config.readfp(f)
    ^^^^^^^^^^^^^
AttributeError: 'ConfigParser' object has no attribute 'readfp'. Did you mean: 
'read'?
[grizzlysmit:~] 34s 1 $ ubuntu-bug update-manager
REDACTED config part /etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient 
permissions
REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg, 
insufficient permissions
Gdk-Message: 10:31:25.104: Unable to load col-resize from the cursor theme

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: update-manager 1:24.04.6
ProcVersionSignature: Ubuntu 6.8.0-22.22-generic 6.8.1
Uname: Linux 6.8.0-22-generic x86_64
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 19 10:30:28 2024
InstallationDate: Installed on 2024-04-09 (10 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240408)
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug noble wayland-session

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https://bugs.launchpad.net/bugs/2062435

Title:
  ubuntu 24.04 partial upgrade failes with python exception

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