Public bug reported:
The prompt setting in /etc/update-manager/release-upgrades controls
whether the user is prompted to upgrade, but also controls whether the
user can manually upgrade using do-release-upgrade -d.
Steps to reproduce:
1) On an 18.04 machine, set Prompt in /etc/update-manager/release-upgrades to
lts or never.
2) Attempt to upgrade to 18.10 beta using do-release-upgrade -d.
3) The upgrade reports "Upgrades to the development release are only available
from the latest supported release." This is both an incorrect error message,
and it prevents upgrade even though the user has specifically requested the
development version.
Possible fixes:
1) The documentation should be changed to indicate that the Prompt argument
controls both whether you are prompted to upgrade, but also whether you can use
the upgrade tool at all.
2) A second configuration option should be added to allow the admin to control
the prompting for upgrade separately from the ability to upgrade, allowing
users to upgrade the system manually, even when Prompt is set to never.
Question: Is the default setting of Prompt=lts going to prevent users
from upgrading their 18.04 machines to 18.10 until they change it to
normal?
Description: Ubuntu 18.04.1 LTS
Release: 18.04
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1795024
Title:
release-upgrades Prompt to anything other than normal prevents beta
upgrades
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