Ubuntu
language-selector package

Cannot change system language

Bug #1582517 reported by bryan paradis on 2016-05-17

This bug report is a duplicate of: Bug #1581567: SRU regression, can't change own data. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	language-selector (Ubuntu)	New	Undecided	Unassigned

Bug Description

System: Dell E6140 i7-620M & Nvidia NVS3100
Ubuntu: 16.04
Kernel: Linux bryan-Latitude-E6410 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Updates: Fully updated as of May 16, 2016

Procedure:
----------
1) Open Language Support
2) Add Japanese Language Support by entering Install/Remove Languages and choosing Japanese from the list
3) Drag Japanese to the top of the ordered list in the main window of Language Support
4) Press Apply System-Wide
5) Logout
6) Login

Expected Outcome:
-----------------
System is now in Japanese

Observed Outcome:
-----------------
System is still in English
Language Support reverted to showing Japanese at the bottom of the ordered list
An error is printed to stderr if ran manually. See below in the description

Description:
------------
Fairly fresh 16.04 Ubuntu install. I was once able to change my system language between English, French, Esperanto and Japanese. Now I am unable to change to any of them. I have been troubleshooting the issue. Things that I have tried:

1) Creating a new user. Also fails.
2) Purging and reinstalling language-selector-gnome and language-selector-common
3) Purging and reinstalling language-selector-gnome, language-selector-common, fontconfig and fontconfig-config
4) Purging language-selector-gnome, language-selector-common, fontconfig, fontconfig-config and all japanese language packs
5) Removing all language packs from Language Support GUI (aka language-selector-gnome)

I am now looking into the problem itself. When running the Language Support GUI manually from the terminal via python3 /usr/bin/gnome-language-selector I get the following error:

-----------------------------------

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/LanguageSelector/gtk/GtkLanguageSelector.py", line 67, in wrapper
    res = f(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/LanguageSelector/gtk/GtkLanguageSelector.py", line 1056, in on_treeview_locales_drag_end
    self.writeUserLanguage(envLanguage)
  File "/usr/lib/python3/dist-packages/LanguageSelector/gtk/GtkLanguageSelector.py", line 802, in writeUserLanguage
    self.writeUserLanguageSetting(userLanguage=languageString)
  File "/usr/lib/python3/dist-packages/LanguageSelector/LanguageSelector.py", line 87, in writeUserLanguageSetting
    iface.SetLanguage(self.validateLangList(userLanguage))
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.Accounts.Error.PermissionDenied: Not authorized

-----------------------------------

I have also taken a strace of this as well via strace -F -tt -s 255 -o ls.strace python3 /usr/bin/gnome-language-selector and will attach it to this issue as well as my current dpkg.