locale.Error: unsupported locale setting

This is exactly the same that happens to me:

rafa@rafa-desk:~$ alskdjfah
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.2.3 final 0
Distributor ID: Ubuntu
Description: Ubuntu 12.10
Release: 12.10
Codename: quantal
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.2/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

The locales that are set:

rafa@rafa-desk:~$ locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=es_ES.UTF-8
LANGUAGE=es_ES
LC_CTYPE="es_ES.UTF-8"
LC_NUMERIC="es_ES.UTF-8"
LC_TIME="es_ES.UTF-8"
LC_COLLATE="es_ES.UTF-8"
LC_MONETARY="es_ES.UTF-8"
LC_MESSAGES="es_ES.UTF-8"
LC_PAPER="es_ES.UTF-8"
LC_NAME="es_ES.UTF-8"
LC_ADDRESS="es_ES.UTF-8"
LC_TELEPHONE="es_ES.UTF-8"
LC_MEASUREMENT="es_ES.UTF-8"
LC_IDENTIFICATION="es_ES.UTF-8"
LC_ALL=

I have resolved this issue reinstalling the language packs, in my case:

# apt-get --reinstall install language-pack-es
# apt-get --reinstall install language-pack-kde-es

command-not-found crashes every time, when it is called using an unknown or uninstalled locale.

So I try:

ck@cebulon:~$ LANG=asd asd
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.2.3 final 0
Distributor ID: Ubuntu
Description: Ubuntu 12.10
Release: 12.10
Codename: quantal
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.2/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

This is on my Ubuntu 12.10.

But on my other computer with Ubuntu 12.04 it crashes as well (although with less output).

Is it an python problem?

Indeed, like comment #3 describes, any uknown locale will trigger a crash.

I have the same problemcommand-not-found version: 0.3
Python version: 3.2.3 final 0
Distributor ID: Ubuntu
Description: Ubuntu 12.10
Release: 12.10
Codename: quantal
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.2/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

And I tried to set LC_ALL and it works,
but I'm not sure is that a right way or not.

I have the same problem.
Output for locale is:

locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME=en_US_custom.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

The problem has solved for me after removing the following line from "/etc/environment":

LC_TIME="en_US_custom.UTF-8"

command-not-found version: 0.3
Python version: 3.2.3 final 0
Distributor ID: Ubuntu
Description: Ubuntu 12.10
Release: 12.10
Codename: quantal
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.2/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

>The problem has solved for me after removing the following line from "/etc/environment":
>LC_TIME="en_US_custom.UTF-8"

Works for me, but a little different:
I`ve added this line in /etc/environment

LC_ALL="ru_RU.utf8"

Works well for me.

Po tej operacji zostanie zwolnione 1365 MB miejsca na dysku.
Kontynuować [T/n]? n
Przerwane.
root@wmp-Aspire-3830TG:/home/wmp# LANG=en_GB apt-get install pulseaudio:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 pulseaudio:i386 : Depends: consolekit:i386 but it is not going to be installed
                   Depends: libasound2-plugins:i386 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
root@wmp-Aspire-3830TG:/home/wmp# LANG=en_GB
root@wmp-Aspire-3830TG:/home/wmp# apt-get install pulseaudio:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 pulseaudio:i386 : Depends: consolekit:i386 but it is not going to be installed
                   Depends: libasound2-plugins:i386 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
root@wmp-Aspire-3830TG:/home/wmp# clean
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.3.1 candidate 1
Distributor ID: Ubuntu
Description: Ubuntu Raring Ringtail (development branch)
Release: 13.04
Codename: raring
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.3/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting
root@wmp-Aspire-3830TG:/home/wmp#

command-not-found versi\xf3n: 0.3
Python versi\xf3n: 3.3.1 final 0
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
Informaci\xf3n de la excepci\xf3n:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.3/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

locale output
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: No se puede establecer LC_ALL al local predeterminado: No existe el archivo o el directorio
LANG=es_SV.UTF-8
LANGUAGE=es_SV:es
LC_CTYPE=UTF-8
LC_NUMERIC="es_SV.UTF-8"
LC_TIME="es_SV.UTF-8"
LC_COLLATE="es_SV.UTF-8"
LC_MONETARY="es_SV.UTF-8"
LC_MESSAGES="es_SV.UTF-8"
LC_PAPER="es_SV.UTF-8"
LC_NAME="es_SV.UTF-8"
LC_ADDRESS="es_SV.UTF-8"
LC_TELEPHONE="es_SV.UTF-8"
LC_MEASUREMENT="es_SV.UTF-8"
LC_IDENTIFICATION="es_SV.UTF-8"
LC_ALL=

This issue is still present in command-not-found 0.3ubuntu7 in Ubuntu Saucy.

bjorn@jupiter:~$ vncviewer
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.3.1 final 0
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.3/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting
bjorn@jupiter:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
bjorn@jupiter:~$ locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=en_US:en
LC_CTYPE=custom.UTF-8
LC_NUMERIC=custom.UTF-8
LC_TIME=custom.UTF-8
LC_COLLATE=custom.UTF-8
LC_MONETARY=custom.UTF-8
LC_MESSAGES=custom.UTF-8
LC_PAPER=custom.UTF-8
LC_NAME=custom.UTF-8
LC_ADDRESS=custom.UTF-8
LC_TELEPHONE=custom.UTF-8
LC_MEASUREMENT=custom.UTF-8
LC_IDENTIFICATION=custom.UTF-8
LC_ALL=
bjorn@jupiter:~$ dpkg --list command-not-found
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===================-==============-==============-============================================
ii command-not-found 0.3ubuntu7.1 all Suggest installation of packages in interact

Reproduced when logging into the Vagrant image http://cloud-images.ubuntu.com/vagrant/saucy/current/saucy-server-cloudimg-amd64-vagrant-disk1.box

Looks like the issue is still present for
http://cloud-images.ubuntu.com/vagrant/saucy/20131208/saucy-server-cloudimg-amd64-vagrant-disk1.box

Sorry for comment after comment.
But maybe it's something else, anyway. This appears when you are trying to use command that doesn't exist.

vagrant@vagrant-ubuntu-saucy-64:~$ htop
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.3.2 final 0
Distributor ID: Ubuntu
Description: Ubuntu 13.10
Release: 13.10
Codename: saucy
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.3/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

Hi,

same problem still in the newest daily build for trusty tar in vagrant image from http://cloud-images.ubuntu.com/vagrant/trusty/20140222/trusty-server-cloudimg-amd64-vagrant-disk1.box

Welcome to Ubuntu Trusty Tahr (development branch) (GNU/Linux 3.13.0-11-generic x86_64)

 * Documentation: https://help.ubuntu.com/

 System information disabled due to load higher than 1.0

  Get cloud support with Ubuntu Advantage Cloud Guest:
    http://www.ubuntu.com/business/services/cloud

----
vagrant@vagrant-ubuntu-trusty-64:~$ idontexist
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.4.0 candidate 1
Distributor ID: Ubuntu
Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04
Codename: trusty
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.4/locale.py", line 592, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

----

There seems to be an underlying problem with locale in this build:

vagrant@vagrant-ubuntu-trusty-64:~$ locale
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=de_DE.UTF-8
LC_TIME=en_DK.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=de_DE.UTF-8
LC_MESSAGES=C
LC_PAPER=de_DE.UTF-8
LC_NAME=de_DE.UTF-8
LC_ADDRESS=de_DE.UTF-8
LC_TELEPHONE=de_DE.UTF-8
LC_MEASUREMENT=de_DE.UTF-8
LC_IDENTIFICATION=de_DE.UTF-8
LC_ALL=

This bug was fixed in the package command-not-found - 0.3ubuntu10

---------------
command-not-found (0.3ubuntu10) trusty; urgency=medium

  [ Anthony Wong ]
  * Fix locale.Error: unsupported locale setting bug (LP: #1029204)
 -- Dimitri John Ledkov <email address hidden> Fri, 21 Mar 2014 12:04:22 +0000

This bug has been reported on the Ubuntu Package testing tracker.

A list of all reports related to this bug can be found here:
http://packages.qa.ubuntu.com/qatracker/reports/bugs/1029204