Ok, I found out that Canonical Partners need to be enabled to install adobe-flashplugin
For future reference: System Settings -> Software and Updates -> Other Software tab -> enable Canonical Partners Not a bug but very annoying nonetheless. Maybe we could raise a warning when suggesting packages that are not in the default repositories. ** Changed in: apt (Ubuntu) Status: New => Invalid ** Changed in: apt (Ubuntu) Assignee: (unassigned) => Marco Ceresa (ceresa) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1524986 Title: adobe-flashplugin suggested but package not available Status in apt package in Ubuntu: Invalid Bug description: When installing chromium-browser $ sudo apt-get install chromium-browser Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: chromium-browser-l10n Suggested packages: webaccounts-chromium-extension unity-chromium-extension adobe-flashplugin [...] However $ sudo apt-get install adobe-flashplugin Reading package lists... Done Building dependency tree Reading state information... Done Package adobe-flashplugin is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'adobe-flashplugin' has no installation candidate ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: apt 1.0.10.2ubuntu1 ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6 Uname: Linux 4.2.0-19-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: Unity Date: Thu Dec 10 22:33:08 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2015-11-20 (19 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) SourcePackage: apt UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1524986/+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