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

[Balint Reczey]

*** This bug is a duplicate of bug 1072136 ***
    https://bugs.launchpad.net/bugs/1072136

** This bug is no longer a duplicate of bug 1783023
   Software Updater is sometimes blank when there are ONLY phased updates and auto-removable kernels
** This bug has been marked a duplicate of bug 1072136
   After doing updates, update manager propose to install an empty list of updates

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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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