Upgrade 16.04 to 18.04

Steve Langasek steve.langasek at ubuntu.com
Fri May 1 21:41:47 UTC 2020

On Fri, May 01, 2020 at 09:01:01PM +0000, Leroy Tennison wrote:

> Tried do-release-upgrade which said "No new releases..."  Realized it's
> probably due to the just-released 20.04.  A quick search of the web almost
> always lists do-release-upgrade.  Even if 20.04 had been out long enough,
> I'm not ready to move to that yet.  Short of "re-install" what are my
> other options?  Thanks for your help.

I've been able to reproduce this and tracked it down to the fact that
do-release-upgrader fails to verify the SSL certificate of
changelogs.ubuntu.com in a bare-bones environment, because the
ca-certificates package is not installed.

This is bug #1796940, which we will look into getting SRUed back into

You can work around the problem by manually installing the ca-certificates

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Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                   https://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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