[Bug 1799319] Re: Upgrade to 18.10 fails: Please install all available updates

[Guy Rouillier]

I was wondering how I could possible recreate this scenario.
Coincidentally, I received your update on the same day I learned that
19.04 was available.  So, I started up the VirtualBox VM containing
Ubuntu Mate 18.10.  I got a pop up telling me that 19.04, and asking if
I would like to upgrade.  I hadn't started this VM in over a week, so I
ran Software Updater to check for updates.  Some were available, so I
installed them first.  Once finished, I closed Software Updater, then
clicked the Upgrade button on the original popup.  The popup disappeared
and nothing happened!  So, I'm back in this same situation as I was when
I first reported this issue.

I tried rebooting so the updates applied by Software Updater were
running.  The same thing is happening.  I run Software Updater; it
reports no updates are available, but a new version is available.  When
I click the upgrade button, Software Updater disappears and nothing
happens.

I'm going to shut down the VM and back it up, so I can repeat this
scenario.  Please let me know what steps you'd like me to take.

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https://bugs.launchpad.net/bugs/1799319

Title:
  Upgrade to 18.10 fails: Please install all available updates

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released

Bug description:
  I just tried to upgrade an x64 VM from 18.04 Mate to 18.10, and it
  failed. Using the Software Updater from the menu, it tells me

  "The software on this computer is up to date. However, Ubuntu 18.10 is
  now available (you have 18.04)."

  When I click the Upgrade... button, the dialog disappears and nothing
  happens.

  If I run do-release-upgrade from a terminal, it tells me

  "root at ubuntu64:~# do-release-upgrade
  Checking for a new Ubuntu release
  Please install all available updates for your release before upgrading."

  I have dual boot on this computer, and also have Ubuntu Mate 18.04
  running as a bootable OS. I just tried to upgrade that installation,
  and it fails in exactly the same way. I only recently installed that
  instance, so it's a very simple installation at this point (unlike the
  VM which I've used for several years and installed numerous packages,
  including PPA.) So there appears to be a general problem in this
  upgrade path.

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