audio_settings crashed with AttributeError in store_audio_settings(): 'NoneType' object has no attribute 'group'

[Paulo Novais]

I was running system test on ubunto 13.10

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: checkbox 0.16.3
ProcVersionSignature: Ubuntu 3.10.0-2.11-generic 3.10.0
Uname: Linux 3.10.0-2-generic x86_64
ApportVersion: 2.10.2-0ubuntu4
Architecture: amd64
Date: Sun Jul 14 16:27:32 2013
ExecutablePath: /usr/lib/checkbox/bin/audio_settings
InstallationDate: Installed on 2013-07-05 (8 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64+mac (20130704)
InterpreterPath: /usr/bin/python3.3
MarkForUpload: True
ProcCmdline: /usr/bin/python3 /usr/share/checkbox/scripts/audio_settings store --file=/home/username/.cache/checkbox/pulseaudio_settings
PythonArgs: ['/usr/share/checkbox/scripts/audio_settings', 'store', '--file=/home/username/.cache/checkbox/pulseaudio_settings']
SourcePackage: checkbox
Title: audio_settings crashed with AttributeError in store_audio_settings(): 'NoneType' object has no attribute 'group'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel Manrique (roadmr)]

The common factor seems to be that affected systems are using a non-english locale. Thus, our regex doesn't match. Here's sample pactl stat output from a system with spanish locale:

Actualmente en uso: 1 bloques conteniendo 63,9 KiB bytes en total.
Ubicados durante a lo largo del tiempo: 14093 bloques conteniendo 17,0 MiB bytes en total.
Tamaño del cache de muestra: 0 B
Cadena de servidor: /run/user/1000/pulse/native
Versión de protocolo de biblioteca: 28
Versión de protocolo de servidor: 28
Es local: yes
Índice de clientes: 146
Tamaño de tesela: 65472
Nombre de usuario: ubuntu
Nombre de anfitrión: 201103-7376
Nombre de servidor: pulseaudio
Versión de servidor: 4.0
Especificación de muestro predeterminado: s16le 2ch 44100Hz
Mapa de canales predeterminado: front-left,front-right
Destino predeterminado: alsa_output.pci-0000_00_1b.0.analog-stereo
Fuente predeterminada: alsa_input.pci-0000_00_1b.0.analog-stereo
Cookie: c2d5:230a

"Destino predeterminado" is the translated version of "Default Sink". The regex doesn't match:

default_pattern = "(?<=Default %s: ).*"

Thus, line 213 of the script produces the failure:

        default = default_regex.search(pactl_status).group()

We're not checking that default_regex.search suceeded (we just blindly assume it did).

There seems to be some code meant to ensure we always use a default (C) locale (see function unlocalized_env), but it doesn't seem to be working as expected. Work to do: see why this function is failing, and fix it.

In the meanwhile, steps to reproduce:
sudo apt-get install language-pack-es language-pack-gnome-es # feel free to replace for a language you understand
LANG=es_ES.UTF-8 LANGUAGE=es_ES //usr/share/checkbox/scripts/audio_settings store --file=/tmp/cache

[Launchpad Janitor (janitor)]

This bug was fixed in the package checkbox - 0.16.7

---------------
checkbox (0.16.7) saucy; urgency=low

  * New upstream release(LP: #1236581):

  * Launchpad automated translation updates

  [ Daniel Manrique ]
  * Ensured that pactl commands are run on a properly unlocalized environment
    (LP: #1201126)
  * scripts/gpu_test: Better validation that glxgears windows were found, to
    avoid manipulation of nonexisting windows which causes threads to crash
    and the entire program to stall. (LP: #1232232)
  * parsers/udevadm: Added additional heuristics for mediatek bluetooth
    controllers (LP: #1210405)

  [ Jeff Lane ]
  * scripts/storage_test: test now exits with a warning if the drive is not
    mounted prior to testing (LP: #1224820)

  [ Brendan Donegan ]
  * scripts/fwts_test: Removed dmi_decode and smbios tests that are no longer present
    in fwts and change version dependency to latest version (LP: #1218993)
  * scripts/virtualization - change kvm command to qemu-system-x86_64 as the
    former is deprecated (LP: #1224854)
  * scripts/memory_test - use per-process memory limit if arch is ARM, except
    for arm64 (LP: #1184688)
 -- Daniel Manrique <email address hidden> Mon, 07 Oct 2013 14:50:49 -0400