[Bug 1575995] [NEW] the 'apt' command doesn't work because of '/var/lib/dpkg/lock'was locked

[yx91490]

Public bug reported:

in the latest ubuntu16.04,after system's first boot,I can't use 'apt
update' command to update information,for the '/var/lib/dpkg/lock'file
was locked,but the 'apt-get update' command and 'aptitude update'
command can do.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.14
Uname: Linux 4.4.8-040408-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Apr 28 08:53:30 2016
InstallationDate: Installed on 2015-12-24 (125 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=zh_CN:zh
 PATH=(custom, no username)
 XDG_RUNTIME_DIR=<set>
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial

** Summary changed:

- the 'apt' command doesn't work because of '/var/lib/dpkg/lock'
+ the 'apt' command doesn't work because of '/var/lib/dpkg/lock'was locked

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https://bugs.launchpad.net/bugs/1575995

Title:
  the 'apt' command doesn't work because of '/var/lib/dpkg/lock'was
  locked

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

Bug description:
  in the latest ubuntu16.04,after system's first boot,I can't use 'apt
  update' command to update information,for the '/var/lib/dpkg/lock'file
  was locked,but the 'apt-get update' command and 'aptitude update'
  command can do.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.14
  Uname: Linux 4.4.8-040408-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Apr 28 08:53:30 2016
  InstallationDate: Installed on 2015-12-24 (125 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=zh_CN:zh
   PATH=(custom, no username)
   XDG_RUNTIME_DIR=<set>
   LANG=zh_CN.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: release-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)

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