[Bug 2074040] [NEW] Doublr enteries in sources.list

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After upgrading to ubuntu 24.04, the `sudo apt update` command was
giving warnings of duplicate entries in sources.list(path
`/etc/apt/sources.list`), on inspection it was found that there were
double entries for all three noble, noble-updates and noble-security in
particular to restricted universe and multiverse. It seems (what I
presume is) that the up gradation process and later updating the file
automatically with ubuntu-release-upgrader cause the presence of 2
entries as this error was not previously present. It could be that those
entries were already present before upgrade and after upgrade the new
automated enteries created the duplicates but this is less probable as I
was in jammy previous which should be having the entries for noble. I
also never updated the file manually. Please ask for any further
information if needed. Given commands produce the following output.

>lsb_release -rd
No LSB modules are available.
Description:	Ubuntu 24.04 LTS
Release:	24.04

>apt-cache policy ubuntu-release-upgrader-core (attaching info for core only, there were gtk and qt too.)
ubuntu-release-upgrader-core:
  Installed: 1:24.04.19
  Candidate: 1:24.04.19
  Version table:
 *** 1:24.04.19 500
        500 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages
        500 http://archive.ubuntu.com/ubuntu noble-updates/main i386 Packages
        100 /var/lib/dpkg/status
     1:24.04.16 500
        500 http://archive.ubuntu.com/ubuntu noble/main amd64 Packages
        500 http://archive.ubuntu.com/ubuntu noble/main i386 Packages

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: ubuntu-release-upgrader-core 1:24.04.19
ProcVersionSignature: Ubuntu 6.8.0-38.38-generic 6.8.8
Uname: Linux 6.8.0-38-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 25 09:15:32 2024
InstallationDate: Installed on 2023-07-06 (385 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223)
PackageArchitecture: all
ProcEnviron:
 LANG=en_IN
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to noble on 2024-07-20 (4 days ago)
VarLogDistupgradeTermlog:
 
modified.conffile..etc.init.d.apport: [modified]
modified.conffile..etc.update-manager.release-upgrades: [modified]
mtime.conffile..etc.init.d.apport: 2024-04-23T17:00:10
mtime.conffile..etc.update-manager.release-upgrades: 2024-07-17T17:24:15.683530

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade noble wayland-session
-- 
Doublr enteries in sources.list
https://bugs.launchpad.net/bugs/2074040
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