** Branch linked: lp:~ubuntu-desktop/gnome-session/ubuntu
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https://bugs.launchpad.net/bugs/1720310
Title:
unity-gnome-shell-migration.18.08.py crashed with signal 5 in
g_object_new_valist() due to gnome-shell-extension-ubuntu-dock not
installed
Status in gnome-session package in Ubuntu:
Triaged
Status in gnome-session source package in Bionic:
Triaged
Bug description:
[Impact]
* People having this particular setup:
- removed ubuntu-desktop metapackage from their system
- upgrading from 16.04 to 18.04 (or previously to 17.10) by manually
editing /etc/apt/sources.lists without using do-release-upgrade (which
reinstalls ubuntu-desktop).
They end up with:
- no ubuntu-dock installed
- and consequentely, the settings migration script would trigger an apport
dialog (crashing) due to lack of gsettings schema.
* Even if this is an unsupported case (people shouldn't cowboy sources.list
and use our upgrader tools), we can easily prevent this crash, ignoring
settings migration in such a case.
[Test Case]
1. Install 16.04
2. Remove ubuntu-desktop metapackage
3. Change your sources.list from "xenial" to "bionic"
4. apt update && apt full-upgrade
5. Reboot and log into a new session once upgrade is done.
-> you won't get the ubuntu-dock, but the session migration script shouldn't
crash.
[Regression Potential]
* The script was crashing (even if there is no settings to migrate,
so it was a no-op). We prevents gsettings to segfault by guarding for
schema existence in the standard way.
------
Upgrade...
ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: ubuntu-session 3.26.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.10.0-35-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 29 08:15:13 2017
ExecutablePath:
/usr/share/session-migration/scripts/unity-gnome-shell-migration.18.08.py
InstallationDate: Installed on 2017-09-25 (3 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
InterpreterPath: /usr/bin/python3.6
ProcCmdline: /usr/bin/python3
/usr/share/session-migration/scripts/unity-gnome-shell-migration.18.08.py
ProcEnviron:
LANGUAGE=ru
PATH=(custom, user)
XDG_RUNTIME_DIR=<set>
LANG=ru_RU.UTF-8
SHELL=/bin/bash
Python3Details: /usr/bin/python3.6, Python 3.6.3rc1, python3-minimal,
3.6.2-1ubuntu4
PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal,
2.7.14-2ubuntu1
Signal: 5
SourcePackage: gnome-session
StacktraceTop:
?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
g_object_new_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
Title: unity-gnome-shell-migration.18.08.py crashed with signal 5 in
g_object_new_valist()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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