[Bug 1910802] Re: update-manager window blank; pkgs_install_oem problem

[Chris Hermansen]

I probably should have added that apt update & apt upgrade seem to work
fine

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https://bugs.launchpad.net/bugs/1910802

Title:
  update-manager window blank; pkgs_install_oem problem

Status in update-manager package in Ubuntu:
  New

Bug description:
  Ubuntu 20.04, since approximately Nov 2020.

  The second window in the update-manager workflow is blank - no active
  but invisible controls, no selectable but invisible text.

  When I run update-manager from the terminal I see this traceback:

  $ update-manager
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/UpdateManager/Dialogs.py", line 118, in <lambda>
      button.connect("clicked", lambda x: callback())
    File "/usr/lib/python3/dist-packages/UpdateManager/UpdatesAvailable.py", line 880, in on_button_install_clicked
      self.window_main.start_install()
    File "/usr/lib/python3/dist-packages/UpdateManager/UpdateManager.py", line 234, in start_install
      self._start_pane(install_backend)
    File "/usr/lib/python3/dist-packages/UpdateManager/UpdateManager.py", line 174, in _start_pane
      pane.start()
    File "/usr/lib/python3/dist-packages/UpdateManager/backend/__init__.py", line 61, in start
      self.commit_oem(pkgs_install_oem, pkgs_upgrade_oem)
  UnboundLocalError: local variable 'pkgs_install_oem' referenced before assignment
  $

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: update-manager 1:20.04.10.2
  ProcVersionSignature: Ubuntu 5.8.0-7630.32~1609193707~20.04~781bb80~dev-generic 5.8.17
  Uname: Linux 5.8.0-7630-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Jan  8 10:51:35 2021
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.default.apport:
   # set this to 0 to disable apport, or to 1 to enable it
   # you can temporarily override this with
   # sudo service apport start force_start=1
   enabled=0
  mtime.conffile..etc.default.apport: 2018-10-18T16:46:45.176415

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