Because I can't fix this for Trusty, you will need to manually uninstall the current chromium-browser package and reinstall it:
sudo apt remove chromium-browser chromium-codecs-ffmpeg-extra sudo apt install chromium-browser ** Changed in: chromium-browser (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1667680 Title: package chromium-browser 53.0.2785.143-0ubuntu0.14.04.1.1145 [origin: Ubuntu] failed to install/upgrade: tentative de remplacement de « /usr/lib/chromium-browser/libs/libffmpeg.so », qui appartient aussi au paquet chromium-codecs-ffmpeg-extra 53.0.2785.143-0ubuntu0.14.04.1.1145 Status in chromium-browser package in Ubuntu: Confirmed Bug description: this bug produced after installing beta package from: sudo add-apt-repository ppa:saiarcot895/chromium-beta procedure: sudo apt-get update sudo apt-get install chromium-browser **Note: Chromium browser has been already installed in older version ProblemType: Package DistroRelease: Ubuntu 14.04 Package: chromium-browser 53.0.2785.143-0ubuntu0.14.04.1.1145 [origin: Ubuntu] ProcVersionSignature: Ubuntu 4.4.0-64.85~14.04.1-generic 4.4.44 Uname: Linux 4.4.0-64-generic x86_64 NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia ApportVersion: 2.14.1-0ubuntu3.23 Architecture: amd64 CrashDB: ubuntu Date: Fri Feb 24 14:30:13 2017 Desktop-Session: 'None' 'None' 'None' DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-trusty-amd64-osp1-20150720-0 DuplicateSignature: package:chromium-browser:53.0.2785.143-0ubuntu0.14.04.1.1145 [origin: Ubuntu]:tentative de remplacement de « /usr/lib/chromium-browser/libs/libffmpeg.so », qui appartient aussi au paquet chromium-codecs-ffmpeg-extra 53.0.2785.143-0ubuntu0.14.04.1.1145 Env: 'None' 'None' ErrorMessage: tentative de remplacement de « /usr/lib/chromium-browser/libs/libffmpeg.so », qui appartient aussi au paquet chromium-codecs-ffmpeg-extra 53.0.2785.143-0ubuntu0.14.04.1.1145 InstallationDate: Installed on 2016-11-22 (93 days ago) InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150720-04:06 Load-Avg-1min: 1.18 Load-Processes-Running-Percent: 0.1% Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 046d:c52f Logitech, Inc. Unifying Receiver Bus 001 Device 002: ID 413c:2113 Dell Computer Corp. Bus 001 Device 004: ID 045e:077f Microsoft Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Precision Tower 3620 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-64-generic.efi.signed root=UUID=f16bc00d-6f42-4dd9-b2ff-d3e30438f85a ro quiet splash vt.handoff=7 SourcePackage: chromium-browser ThirdParty: True Title: package chromium-browser 53.0.2785.143-0ubuntu0.14.04.1.1145 [origin: Ubuntu] failed to install/upgrade: tentative de remplacement de « /usr/lib/chromium-browser/libs/libffmpeg.so », qui appartient aussi au paquet chromium-codecs-ffmpeg-extra 53.0.2785.143-0ubuntu0.14.04.1.1145 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/26/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.3.6 dmi.board.name: 09WH54 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.3.6:bd05/26/2016:svnDellInc.:pnPrecisionTower3620:pvr:rvnDellInc.:rn09WH54:rvrA00:cvnDellInc.:ct6:cvr: dmi.product.name: Precision Tower 3620 dmi.sys.vendor: Dell Inc. gconf-keys: /desktop/gnome/applications/browser/exec = b'firefox\n'/desktop/gnome/url-handlers/https/command = b'sensible-browser %s\n'/desktop/gnome/url-handlers/https/enabled = b'true\n'/desktop/gnome/url-handlers/http/command = b'sensible-browser %s\n'/desktop/gnome/url-handlers/http/enabled = b'true\n'/desktop/gnome/session/required_components/windowmanager = b''/apps/metacity/general/compositing_manager = b''/desktop/gnome/interface/icon_theme = b'gnome\n'/desktop/gnome/interface/gtk_theme = b'Clearlooks\n' modified.conffile..etc.default.chromium.browser: [deleted] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1667680/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp