[Bug 1789019] Re: update-manager asks for installing updates but shows no list of update, just an empty box…

[Paul White]

*** This bug is a duplicate of bug 1783023 ***
    https://bugs.launchpad.net/bugs/1783023

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1783023, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may
find.

** This bug has been marked a duplicate of bug 1783023
   Software Updater is sometimes blank when there are ONLY phased updates and auto-removable kernels

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https://bugs.launchpad.net/bugs/1789019

Title:
  update-manager asks for installing updates but shows no list of
  update, just an empty box…

Status in update-manager package in Ubuntu:
  New

Bug description:
  Hi,

  seen on 16.04 ( unity ) and 18.04 ( default DE ), affecting many users
  and not systematic :

  sometimes update-manager asks for installing updates but does not show
  any list of available updates.

  At the very same moment, commands sudo apt update or sudo apt list
  --upgradable work as expected.

  for reference : https://forum.ubuntu-fr.org/viewtopic.php?id=2029394 (
  french )

  For last example shown in attached picture, the ( almost ) exact same
  list of updates appeared correctly in UbuntuBudgie's update-manager… (
  on the same machine but booted from another disc partition ).

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