[Bug 1587519] [NEW] unable to install any update

[Mandar]

Public bug reported:

mandar at hp-g6:~$ lsb_release -rd
Description:	Ubuntu 16.04 LTS
Release:	16.04

mandar at hp-g6:~$ apt-cache policy pkgname
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/numix-ppa-trusty.list:2 and /etc/apt/sources.list.d/numix-ppa-trusty.list:3
N: Unable to locate package pkgname

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.14
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME-Classic:GNOME
Date: Tue May 31 20:22:48 2016
InstallationDate: Installed on 2015-10-23 (221 days ago)
InstallationMedia: It
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade xenial

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https://bugs.launchpad.net/bugs/1587519

Title:
  unable to install any update

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

Bug description:
  mandar at hp-g6:~$ lsb_release -rd
  Description:	Ubuntu 16.04 LTS
  Release:	16.04

  mandar at hp-g6:~$ apt-cache policy pkgname
  W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/numix-ppa-trusty.list:2 and /etc/apt/sources.list.d/numix-ppa-trusty.list:3
  N: Unable to locate package pkgname

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.14
  ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: GNOME-Classic:GNOME
  Date: Tue May 31 20:22:48 2016
  InstallationDate: Installed on 2015-10-23 (221 days ago)
  InstallationMedia: It
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)
  VarLogDistupgradeTermlog:

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