[Bug 1513232] Re: do-release-upgrade no longer works from lucid to precise

[Alex Muntada]

I spent quite some time debugging this yesterday adding extra
information on the logs and I finally found that it's a transient error
due to the state of the remote mirror. Using archive.ubuntu.com makes no
difference (I guess because it's not the mirror master).

Thus, after trying many times, do-release-upgrade eventually accepted
all packages as trusted. Tried a couple of times more and it worked fine
each time. A few minutes later it failed again. All this without any
changes in the code, so the problem is that something is happening in
the remote end that lucid doesn't like.

I also found that the workaround didn't work (I'm not sure why) so this
is what I did:

 1. run do-release-upgrade and wait until it fails
 2. cd $(ls -trd /tmp/tmp* | tail -1)
 3. edit DistUpgradeCache.py and find the comment "check if the user overwrote the unauthenticated warning"
 4. add a new line below with "return True" that will avoid aborting and save the file
 5. run ./precise

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https://bugs.launchpad.net/bugs/1513232

Title:
  do-release-upgrade no longer works from lucid to precise

Status in update-manager package in Ubuntu:
  Confirmed
Status in update-manager source package in Precise:
  Confirmed

Bug description:
  When trying to run do-release-upgrade to go from Lucid to Precise, the
  upgrade fails with :

  Error authenticating some packages

  It was not possible to authenticate some packages. This may be a
  transient network problem. You may want to try again later. See below
  for a list of unauthenticated packages. 

  accountsservice ...

  Workaround is to add the following statement in /etc/update-manager/release-upgrades.d/unauth.cfg :
  [Distro]
  AllowUnauthenticated=yes

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