unity8 crashed with signal 5 in g_settings_get_value() on Turkish locale

[Numan Demirdöğen]

I can not log in to Unity8 session on Ubuntu 16.04. When I try to log in to Unity8 session, only a black screen is shown. And when I return to Unity7 session, I get a crash report from apport.

To get to the default (unity7) session:
1- CTRL+ALT+F1
2- Log in
3- sudo systemctrl restart lightdm

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity8 8.11+16.04.20160310.4-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-12.28-generic 4.4.4
Uname: Linux 4.4.0-12-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
Date: Sat Mar 12 19:16:58 2016
ExecutablePath: /usr/bin/unity8
InstallationDate: Installed on 2016-01-16 (55 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160116)
ProcCmdline: unity8
Signal: 5
SourcePackage: unity8
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_settings_get_value () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 QGSettings::get(QString const&) const () from /usr/lib/x86_64-linux-gnu/libgsettings-qt.so.1
 GSettingsQml::componentComplete() () from /usr/lib/x86_64-linux-gnu/qt5/qml/GSettings.1.0/libGSettingsQmlPlugin.so
Title: unity8 crashed with signal 5 in g_settings_get_value()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Numan Demirdöğen (if.gnu.linux)]

The bug #1545784 is dublicate of this bug.

[Apport retracing service (apport)]

StacktraceTop:
 g_settings_schema_get_value () from /tmp/apport_sandbox_Lw5qLg/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_settings_schema_key_init () from /tmp/apport_sandbox_Lw5qLg/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_settings_get_value () from /tmp/apport_sandbox_Lw5qLg/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 QGSettings::get (this=0x17a14a0, key=...) at qgsettings.cpp:74
 GSettingsQml::componentComplete (this=0x1446810) at gsettings-qml.cpp:146

[Albert Astals Cid (aacid)]

GSettingsQt is asking for show-desktopicons when it should be asking for show-desktop-icons.

if.gnu.linux can you please attach the /usr/share/glib-2.0/schemas/org.gnome.desktop.background.gschema.xml file from your computer?

Also what is the output of running "locale" in a terminal?

[Numan Demirdöğen (if.gnu.linux)]

@Albert Astals Cid, output of locale command is below. Also, I attached /usr/share/glib-2.0/schemas/org.gnome.desktop.background.gschema.xml file.

locale
LANG=tr_TR.UTF-8
LANGUAGE=tr:en
LC_CTYPE="tr_TR.UTF-8"
LC_NUMERIC=tr_TR.UTF-8
LC_TIME=tr_TR.UTF-8
LC_COLLATE="tr_TR.UTF-8"
LC_MONETARY=tr_TR.UTF-8
LC_MESSAGES="tr_TR.UTF-8"
LC_PAPER=tr_TR.UTF-8
LC_NAME=tr_TR.UTF-8
LC_ADDRESS=tr_TR.UTF-8
LC_TELEPHONE=tr_TR.UTF-8
LC_MEASUREMENT=tr_TR.UTF-8
LC_IDENTIFICATION=tr_TR.UTF-8
LC_ALL=

[Albert Astals Cid (aacid)]

Ok, i can reproduce this having the locale set to turkish, quite weird, will investigate.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gsettings-qt - 0.1+16.04.20160329-0ubuntu1

---------------
gsettings-qt (0.1+16.04.20160329-0ubuntu1) xenial; urgency=medium

  [ Albert Astals Cid ]
  * Use QChar toUpper/toLower instead of C version (LP: #1556461)

 -- Michał Sawicz <email address hidden> Tue, 29 Mar 2016 12:56:42 +0000

[Numan Demirdöğen (if.gnu.linux)]

I can confirm that the bug is fixed by the released packages.

LC_ALL=C apt-cache policy libgsettings-qt1:amd64
libgsettings-qt1:
  Installed: 0.1+16.04.20160329-0ubuntu1
  Candidate: 0.1+16.04.20160329-0ubuntu1
  Version table:
 *** 0.1+16.04.20160329-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status