[Bug 1965121] [NEW] "archive.ubuntu.com" was missing in "/etc/apt/sources.list"

[LeeJaeHyeon]

Public bug reported:

Right after clean install, "archive.ubuntu.com" was missing in
"/etc/apt/sources.list" as summary.

So, apt checked too small amount of servers for "apt update" or "apt install",
and all the fundamental and basic dev packages like libgtk-dev or gnome-builder were not available to download.

Platform : Ubuntu 20.04.4 LTS

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: apt 2.0.6
ProcVersionSignature: Ubuntu 5.13.0-35.40~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-35-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 16 20:18:20 2022
InstallationDate: Installed on 2022-03-16 (0 days ago)
InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
SourcePackage: apt
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal wayland-session

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https://bugs.launchpad.net/bugs/1965121

Title:
  "archive.ubuntu.com" was missing in "/etc/apt/sources.list"

Status in apt package in Ubuntu:
  New

Bug description:
  Right after clean install, "archive.ubuntu.com" was missing in
  "/etc/apt/sources.list" as summary.

  So, apt checked too small amount of servers for "apt update" or "apt install",
  and all the fundamental and basic dev packages like libgtk-dev or gnome-builder were not available to download.

  Platform : Ubuntu 20.04.4 LTS

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: apt 2.0.6
  ProcVersionSignature: Ubuntu 5.13.0-35.40~20.04.1-generic 5.13.19
  Uname: Linux 5.13.0-35-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.21
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Mar 16 20:18:20 2022
  InstallationDate: Installed on 2022-03-16 (0 days ago)
  InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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