I have Ubuntu 15.10 and I refused by accident the 16.04 LTS upgrade. So, now when I launch do-release-upgrade, no new release where found and I cannot upgrade to 16.04 LTS.

I have also checked the content of the file /usr/lib/ubuntu-release-upgrader/release-upgarde-available:

New release '16.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Is there a way to re-enable Ubuntu upgrade somewhere?

  • Did you try sudo do-release-upgrade -d? Make sure it says you are upgrading to 16.04 before you enter "y"! – edwinksl Sep 16 '16 at 8:08

after reading the /usr/lib/python3/dist-packages/UpdateManager/Core I have discover that the entry 15.10 has been removed on the /var/lib/update-manager-lts.

So, after add the correct entry, my upgrade is running...

  • but upgrade failed... – Julien Richefeu Sep 16 '16 at 8:38
  • after restart and reboot it seems that the trick is done... sorry for the noise – Julien Richefeu Sep 16 '16 at 9:01

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