package libxau6:i386 1:1.0.8-1 failed to install/upgrade: package libxau6:i386 is already installed and configured

[Vishal Kolekar]

my system gives error

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libxau6:i386 1:1.0.8-1
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.1-0ubuntu2.4
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Wed Feb 1 17:35:07 2017
Dependencies:
 gcc-6-base 6.0.1-0ubuntu1
 libc6 2.23-0ubuntu5
 libgcc1 1:6.0.1-0ubuntu1
 multiarch-support 2.23-0ubuntu5
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
DpkgHistoryLog:
 Start-Date: 2017-02-01 17:34:51
 Commandline: aptdaemon role='role-commit-packages' sender=':1.105'
 Install: mesa-utils:amd64 (8.3.0-1, automatic), p7zip-full:amd64 (9.20.1~dfsg.1-4.2, automatic), playonlinux:amd64 (4.2.10-2ubuntu0.1)
DuplicateSignature:
 package:libxau6:i386:1:1.0.8-1
 Processing triggers for mime-support (3.59ubuntu1) ...
 dpkg: error processing package libjson-c2:i386 (--configure):
  package libjson-c2:i386 is already installed and configured
ErrorMessage: package libxau6:i386 is already installed and configured
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Sony Corporation Core Processor Integrated Graphics Controller [104d:9071]
InstallationDate: Installed on 2016-10-23 (103 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Lsusb:
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 003: ID 0c45:6409 Microdia Webcam
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Sony Corporation VPCEB11FM
PackageArchitecture: i386
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-59-generic root=UUID=ff9b3c95-664e-47f2-900a-ddb5ec2c13a8 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.15ubuntu0.2
SourcePackage: dpkg
Title: package libxau6:i386 1:1.0.8-1 failed to install/upgrade: package libxau6:i386 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/12/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: R0220Y8
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR0220Y8:bd01/12/2010:svnSonyCorporation:pnVPCEB11FM:pvrC603RAC5:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VPCEB11FM
dmi.product.version: C603RAC5
dmi.sys.vendor: Sony Corporation
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Fri Feb 3 22:58:51 2017
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.18.4-0ubuntu0.2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.