ccsm crashes with "locale.Error: unsupported locale setting" when locale is unsupported - should fallback to C

[Sam_]

TEST CASE:
1. open a terminal
2. run the command:
   $ export LC_MESSAGES=unknown
3. ccsm

Results:
The crash below. ccsm should catch the exception and fallback to C.

$ ccsm
(process:1732): Gtk-WARNING **: Locale not supported by C library.
 Using the fallback 'C' locale.
Traceback (most recent call last):
  File "/usr/bin/ccsm", line 93, in <module>
    import ccm
  File "/usr/lib/python2.7/dist-packages/ccm/__init__.py", line 1, in <module>
    from ccm.Conflicts import *
  File "/usr/lib/python2.7/dist-packages/ccm/Conflicts.py", line 26, in <module>
    from ccm.Constants import *
  File "/usr/lib/python2.7/dist-packages/ccm/Constants.py", line 79, in <module>
    locale.setlocale(locale.LC_ALL, "")
  File "/usr/lib/python2.7/locale.py", line 531, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting
When started with LANG=C it opens fine.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: compizconfig-settings-manager 0.9.4-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.39-3.10-generic 2.6.39
Uname: Linux 2.6.39-3-generic x86_64
NonfreeKernelModules: wl
Architecture: amd64
Date: Sun Jun 12 20:58:30 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110423)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=de:en
 PATH=(custom, no user)
 LANG=C
 LC_MESSAGES=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: compizconfig-settings-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Jean-Baptiste Lallement (jibel)]

Thanks for your report. This is easily reproducible. I'm setting to triaged/low because the workaround is easy, and usually the locale is set to a supported and installed locale.

[Sam_ (and-sam)]

dpkg-reconfigure locales was issued.
Maybe this Bug #198758 is similar.
$ locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Kann LC_ALL nicht auf die Standard-Lokale einstellen: Datei oder Verzeichnis nicht gefunden
## above line says: can't set LC_ALL to standard local: file or directory not found.
LANG=de
LANGUAGE=de:en
LC_CTYPE="de"
LC_NUMERIC="de"
LC_TIME="de"
LC_COLLATE="de"
LC_MONETARY="de"
LC_MESSAGES=de_DE.UTF-8
LC_PAPER="de"
LC_NAME="de"
LC_ADDRESS="de"
LC_TELEPHONE="de"
LC_MEASUREMENT="de"
LC_IDENTIFICATION="de"
LC_ALL=

[Sam_ (and-sam)]

Since latest updates of language packages no further crash, CCSM starts from launcher without complains.

[Jean-Baptiste Lallement (jibel)]

This is because lightdm has been fixed to correctly handle locales but the crash still exists in ccsm if the locale isn't installed on the system (see test case)

---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Sam_ (and-sam)]

Thanks for the clarification; I thought because locales was updated also.
locales 2.13+git20110617-1

[w-sky (w-sky)]

This bug affects me now with Ubuntu 12.04 beta when the "Regional Formats" have been changed with the Language Support tool to something else than "en_US.UTF-8" !!!

Workaround: in a terminal, enter the following command:
export LC_ALL="en_US.UTF-8"

then start ccsm in that terminal.

[w-sky (w-sky)]

PS: same problem with OpenShot ... it will not start and complain about languages unless preceded by
export LC_ALL="en_US.UTF-8"
in a terminal.

locale-gen does not help.

[Phillip Susi (psusi)]

This package has been removed from Ubuntu. Closing all related bugs.