[Bug 2076345] Re: Unresponsive window at the end of the initial phase

[Nathan Teodosio]

** Attachment added: "umsl.mkv"
   https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/2076345/+attachment/5803807/+files/umsl.mkv

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Title:
  Unresponsive window at the end of the initial phase

Status in update-manager package in Ubuntu:
  In Progress

Bug description:
  In the "first phase" of update-manager, the program updates the Apt
  cache and at the end of it calculates the updates for the system. The
  latter is done synchronously; It blocks the events in the Gtk window,
  including signals. That manifests itself to the end user as:

  1. Inability to close the window via soft methods, such as INT or the window manager's close action. Xkill still works but leaves the process running.
  2. Window stops being drawn and becomes just a passive box. E.g. when raising a window above update-manager and raising update-manager again, it just displays the contents of that other window.

  That is captured in the attached video (umsl.mkv).

  The operation may take a long time to complete, but might be difficult
  to catch in systems reasonably up to date; Maybe that is why this
  wasn't reported as an annoyance before. My 'apt upgrade --dry-run'
  says 'Upgrading: 287, Installing: 1, Removing: 0, Not Upgrading: 180'.

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