[Bug 1648237] Re: update-manager and unattended-upgrades failure

[Martin Wimpress]

** No longer affects: ubuntu-mate

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https://bugs.launchpad.net/bugs/1648237

Title:
  update-manager and unattended-upgrades failure

Status in unattended-upgrades package in Ubuntu:
  Confirmed
Status in update-manager package in Ubuntu:
  Confirmed

Bug description:
  A series of issues about update-manager and unattended-upgrade. I have set the system to:
  - automatically check for update daily
  - when there are security updates, download and install them automatically
  - when there are other updates, display them immediately.

  What occurs:

  (1) unattended-upgrade runs on boot but systematically its log states
  every day that: "No packages found that can be upgraded unattended and
  no pending auto-removals" even where there are security updates to
  install.

  (2) update-manager appears not to refresh the cache automatically
  after boot.

  (3) when the cache is manually refreshed so there are updates, update-
  manager runs after a subsequent boot and appears in the panel. However
  clicking on it leads it to simply disappear.

  (4) update-manager will not launch from the menu. When launched from a
  terminal it runs correctly, refreshes the cache and will install
  updates.

  No crash reports, nothing obvious in log files.

  Ubuntu-MATE 16.10 clean install, fully updated.

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