Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unity8-desktop-session (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1407556
Title:
Wrong Qt backend used in desktop session (xcb vs. Mir)
Status in unity8 package in Ubuntu:
Incomplete
Status in unity8-desktop-session package in Ubuntu:
Confirmed
Bug description:
I installed unity8-desktop-session-mir in my vmplayer vivid guest and
tried logging into it, got only a black screen, and found a unity8
crash file in the /var/crash afterwards.
I also almost always (9 out of 10 times) get a black screen if I try
to log into a ubuntu-desktop-mir session, and if I do manage to get a
normal screen with ubuntu-desktop-mir, resizing it gives me the black
screen. So this might be related to a bug in mir.
ProblemType: Crash
DistroRelease: Ubuntu 15.04
Package: unity8 8.02+15.04.20141216.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
ApportVersion: 2.15.1-0ubuntu1
Architecture: amd64
Date: Mon Jan 5 11:03:29 2015
ExecutablePath: /usr/bin/unity8
ExecutableTimestamp: 1418728702
InstallationDate: Installed on 2015-01-03 (1 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141220)
ProcCmdline: unity8
ProcCwd: /home/rocko
ProcEnviron:
LANGUAGE=en_US
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
Signal: 6
SourcePackage: unity8
StacktraceTop:
QMessageLogger::fatal(char const*, ...) const () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
QPlatformIntegrationFactory::create(QString const&, QStringList const&,
int&, char**, QString const&) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
Title: unity8 crashed with SIGABRT in QMessageLogger::fatal()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
upstart.unity8.log:
()
QXcbConnection: Could not connect to display
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