[Bug 2047447] Re: No valid source.list found while upgrading from mantic to noble

[Nick Rosbrook]

Actually, I can very easily reproduce this with just these sources:

root at mantic:~# cat /etc/apt/sources.list
# Move to /etc/apt/sources.list.d/ubuntu.sources
root at mantic:~# cat /etc/apt/sources.list.d/ubuntu.sources 
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

## Ubuntu distribution repository
##
## The following settings can be tweaked to configure which packages to use from Ubuntu.
## Mirror your choices (except for URIs and Suites) in the security section below to
## ensure timely security updates.
## 
## Types: Append deb-src to enable the fetching of source package.
## URIs: A URL to the repository (you may add multiple URLs)
## Suites: The following additional suites can be configured
##   <name>-updates   - Major bug fix updates produced after the final release of the
##                      distribution.
##   <name>-backports - software from this repository may not have been tested as
##                      extensively as that contained in the main release, although it includes
##                      newer versions of some applications which may provide useful features.
##                      Also, please note that software in backports WILL NOT receive any review
##                      or updates from the Ubuntu security team.
## Components: Aside from main, the following components can be added to the list
##   restricted  - Software that may not be under a free license, or protected by patents.
##   universe    - Community maintained packages. Software from this repository is 
##                 ENTIRELY UNSUPPORTED by the Ubuntu team. Also, please note
##                 that software in universe WILL NOT receive any
##                 review or updates from the Ubuntu security team.
##   multiverse  - Community maintained of restricted. Software from this repository is
##                 ENTIRELY UNSUPPORTED by the Ubuntu team, and may not be under a free 
##                 licence. Please satisfy yourself as to your rights to use the software.
##                 Also, please note that software in multiverse WILL NOT receive any 
##                 review or updates from the Ubuntu security team.
##
## See the sources.list(5) manual page for further settings.
Types: deb
URIs: http://archive.ubuntu.com/ubuntu
Suites: mantic mantic-updates
Components: main universe
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

## Ubuntu security updates. Aside from URIs and Suites,
## this should mirror your choices in the previous section.
Types: deb
URIs: http://security.ubuntu.com/ubuntu
Suites: mantic-security
Components: main universe
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg


** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Incomplete => Confirmed

** Changed in: ubuntu-release-upgrader (Ubuntu)
   Importance: Medium => High

** Changed in: ubuntu-release-upgrader (Ubuntu)
     Assignee: (unassigned) => Nick Rosbrook (enr0n)

** Tags added: foundations-todo

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https://bugs.launchpad.net/bugs/2047447

Title:
  No valid source.list found while upgrading from mantic to noble

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  Checking package manager
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Hit http://fr.archive.ubuntu.com/ubuntu mantic InRelease                                                                                                                                                                                                                                                                    
  Hit http://fr.archive.ubuntu.com/ubuntu mantic-updates InRelease                                                                                                                                                                                                                                                            
  Hit http://fr.archive.ubuntu.com/ubuntu mantic-security InRelease                                                                                                                                                                                                                                                           
  Hit http://fr.archive.ubuntu.com/ubuntu mantic-backports InRelease                                                                                                                                                                                                                                                          
  Hit https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu lunar InRelease                                                                                                                                                                                                                                                     
  Fetched 0 B in 0s (0 B/s)                                                                                                                                                                                                                                                                                                   
  Reading package lists... Done    
  Building dependency tree... Done 
  Reading state information... Done

  Checking for installed snaps

  Calculating snap size requirements

  Updating repository information

  No valid sources.list entry found

  While scanning your repository information no entry about mantic 
  could be found. 

  An upgrade might not succeed.

  Do you want to continue anyway?

  Continue [yN]

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