It looks like I made a mistake when changing accountsservice in connection with the fix of bug #1440275. Just uploaded a correction, which is waiting for distro manager approval.
It's an inconsistency in one of the language-tools scripts which causes the reported behavior: $ /usr/share/language-tools/language-validate ja_JP.UTF-8 en After the change, that command will result in ja or ja_JP. This is the source code diff: http://launchpadlibrarian.net/220369983/accountsservice_0.6.40-2ubuntu4_0.6.40-2ubuntu5.diff.gz ** Changed in: accountsservice (Ubuntu) Importance: Undecided => High ** Changed in: accountsservice (Ubuntu) Status: New => In Progress ** Changed in: accountsservice (Ubuntu) Assignee: (unassigned) => Gunnar Hjalmarsson (gunnarhj) ** Changed in: lightdm (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to accountsservice in Ubuntu. https://bugs.launchpad.net/bugs/1502921 Title: LightDM sets wrong environment variables Status in accountsservice package in Ubuntu: In Progress Status in lightdm package in Ubuntu: New Bug description: LightDM sets wrong GDM_LANG and LANGUAGE environment variables. ikuya@UbuntuWily6:~$ env |grep LANG LANG=ja_JP.UTF-8 GDM_LANG=en LANGUAGE=en they should be: ikuya@UbuntuWily6:~$ env |grep LANG LANG=ja_JP.UTF-8 GDM_LANG=ja LANGUAGE=ja According to this bug, every menu shows in English. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: lightdm 1.16.3-0ubuntu1 ProcVersionSignature: Ubuntu 4.2.0-14.16-generic 4.2.2 Uname: Linux 4.2.0-14-generic x86_64 ApportVersion: 2.19-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Mon Oct 5 23:14:27 2015 InstallationDate: Installed on 2015-10-05 (0 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151005) SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1502921/+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