[Bug 1861481] [NEW] language-options causes live CD sessions to be untranslated

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Gunnar Hjalmarsson (gunnarhj):

Since Ubuntu 19.10, for all Ubuntu live CDs that use LightDM (e.g. MATE
and Xubuntu), if a user selects a language in syslinux other than those
with an included langpack, the session is then untranslated.

For example, if one boots Ubuntu MATE 20.04 and selects Greek in
syslinux, he ends up with LANGUAGE=en in the session.

The chain of events is:
LightDM has an Ubuntu-specific patch that makes it call /usr/share/language-tools/language-options instead of the upstream `locale -a`.
`locale -a` does list el_GR as a supported locale because casper correctly updated the locales.
But language-options doesn't list el_GR, so it fools LightDM into thinking that Greek aren't supported; while they're all there, since e.g. MATE doesn't rely on langpacks; mate-panel.mo and mate-calc.mo etc are all there.

I believe the correct fix would be for language-options to list el_GR on
live CDs (to merge the output of locale -a in its output).

Thanks!

** Affects: accountsservice (Ubuntu)
     Importance: High
         Status: Confirmed

** Affects: lightdm (Ubuntu)
     Importance: Medium
     Assignee: Gunnar Hjalmarsson (gunnarhj)
         Status: In Progress


** Tags: patch rls-ff-notfixing
-- 
language-options causes live CD sessions to be untranslated
https://bugs.launchpad.net/bugs/1861481
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