[Bug 848659] Re: Upgrade from natty fails with 64-bit oneiric beta cd

[Tim Frost]

I am now confused:
- my 64-bit server upgraded from a CD burnt from the 20110915 daily 64-bit server ISO, with no problems
- upgrade of a 64-bit VM which has no additional software succeeds using the 64-bit alternate ISO 20110920.5 
- attempts to upgrade my main PC, running 64-bit natty, fail with the same error, during step 2 (setting new channels), using a CDRW created from any of:
  * 20110915 64-bit alternate ISO
  * 20110915 64-bit server ISO
   20110920.5 64-bit alternate ISO

In addition, do-release-upgrade can't find a development release, so I can't even use that to upgrade:
tim at zaphod:~$ sudo do-release-upgrade -d
[sudo] password for tim: 
Checking for a new ubuntu release
No new release found
tim at zaphod:~$ 


The attempts to upgrade my main system DID fetch packages files from an acceptable repository even if I chose "NO" at the "Fetch latest updates from the network" question.  It appears that the question only affects packages that are available from the CD - the packages fetched were from universe or multiverse or from the partner repository http://archive.canonical.com/ubuntu.  If that is the case, then the message is misleading.


There is a (or at least a potential) secondary bug, because the upgrade process didn't recognise ucmirror.canterbury.ac.nz as a valid mirror, although natty synaptic offers that as a choice.  I suspect that the upgrader doesn't recognise anything other than "*.archive.ubuntu.com" as a valid mirror. I discovered this when I switched mirror after discovering that the Citylink mirror that is considered official (nz.archive.ubuntu.com => ubuntu.citylink.co.nz) was not up-to-date, and tried to do the release update after selecting ucmirror.canterbury.ac.nz.  With ucmirror.canterbury.ac.nz, I got 'no valid mirrors found'

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Title:
  Upgrade from natty fails with 64-bit oneiric beta cd

Status in “update-manager” package in Ubuntu:
  New
Status in “update-manager” source package in Oneiric:
  New

Bug description:
  System is running 64-bit natty.  When I insert a CD burnt from image
  ubuntu-11.10-beta1-alternate-amd64.iso,  the upgrade process runs
  until it is attempting to process the i386 Packages files.  At that
  step, the upgrade process stops with error 'W:Failed to fetch
  cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Beta amd64
  (20110901)/dists/oneiric/main/binary-i386/Packages  Please use apt-
  cdrom to make this CD-ROM recognized by APT. apt-get update cannot be
  used to add new CD-ROMs'

  I note that the two i386 Packages.gz files are 20 bytes, corresponding
  to a zero-length uncompressed file.

  Contents of /var/log/dist-upgrade attached as a tar archive

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