*** This bug is a duplicate of bug 1286836 *** https://bugs.launchpad.net/bugs/1286836
Also happened the same after upgrading from 14.10 to 15.04 . Unity is not starting automatically either -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to libav in Ubuntu. https://bugs.launchpad.net/bugs/1311148 Title: package libpostproc52 6:0.8.10-0ubuntu0.13.10.1 failed to install/upgrade: libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances Status in libav package in Ubuntu: Confirmed Bug description: Immediately after 14.04 LTS upgrade. ProblemType: Package DistroRelease: Ubuntu 14.04 Package: libpostproc52 6:0.8.10-0ubuntu0.13.10.1 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 AptOrdering: libpostproc52: Install python-smbc: Install libpostproc52: Configure python-smbc: Configure Architecture: amd64 Date: Tue Apr 22 07:11:33 2014 Dependencies: gcc-4.9-base 4.9-20140406-0ubuntu1 libavutil51 6:0.8.10-0ubuntu0.13.10.1 [origin: unknown] libc6 2.19-0ubuntu6 libgcc1 1:4.9-20140406-0ubuntu1 multiarch-support 2.19-0ubuntu6 DpkgTerminalLog: dpkg: error processing archive /var/cache/apt/archives/libpostproc52_6%3a0.git20120821-4_amd64.deb (--unpack): libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances DuplicateSignature: package:libpostproc52:6:0.8.10-0ubuntu0.13.10.1:libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances ErrorMessage: libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances InstallationDate: Installed on 2012-12-26 (482 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) SourcePackage: libav Title: package libpostproc52 6:0.8.10-0ubuntu0.13.10.1 failed to install/upgrade: libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances UpgradeStatus: Upgraded to trusty on 2014-04-22 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libav/+bug/1311148/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp