This appears to be a crash inside Qt itself, and only occurs with 5.6+, apparently due to QDBus changing to use threading instead of the event loop, for asynchronous operations. There seems to be some fixes in Qt Code Review that should theoretically fix this. It would be nice if we could test these and get them into our release of Qt. I'm afraid there won't be any way to work around this crash in the scope or ubuntu- download-manager (we're keeping a u-d-m singleton object around, which is destroyed on exit) code itself.
** Package changed: unity-scope-click (Ubuntu) => qtbase-opensource-src (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1618590 Title: scoperunner crashed with SIGSEGV in QObject::disconnect() Status in qtbase-opensource-src package in Ubuntu: Confirmed Bug description: crash ProblemType: Crash DistroRelease: Ubuntu 16.10 Package: unity-scope-click 0.1.1+16.10.20160808-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9136.55-generic 4.4.16 Uname: Linux 4.4.0-9136-generic x86_64 ApportVersion: 2.20.3-0ubuntu7 Architecture: amd64 Date: Tue Aug 30 17:54:20 2016 ExecutablePath: /usr/lib/x86_64-linux-gnu/unity-scopes/scoperunner InstallationDate: Installed on 2016-08-27 (3 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcCmdline: /usr/lib/x86_64-linux-gnu/unity-scopes/scoperunner /usr/lib/x86_64-linux-gnu/unity-scopes/clickapps/clickscope.ini Scope: Apps Signal: 11 SourcePackage: unity-scope-click StacktraceTop: QObject::disconnect(QObject const*, char const*, QObject const*, char const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 start_thread (arg=0x7fae9eade700) at pthread_create.c:333 Title: scoperunner crashed with SIGSEGV in QObject::disconnect() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1618590/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp