Ok... Seems I can reproduce it: * Open an app * swipe it away * open the media player * It will display a message that no file has been selected. click ok => the media player crashes and the previously opened app will show up. * swipe the app away => *boom*
This seems to happen because unity-mir requests a new screenshot for the crashed app. The crashing thread: #0 0xb44496c0 in std::thread::_Impl<std::_Bind_simple<std::reference_wrapper<mir::scene::SnapshottingFunctor> ()> >::_M_run() () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.15 #1 0xb6704a24 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 Which seems to be triggered by: #0 0xb6140726 in __libc_do_syscall () from /lib/arm-linux-gnueabihf/libpthread.so.0 #1 0xb613b660 in __pthread_mutex_unlock_usercnt () from /lib/arm-linux-gnueabihf/libpthread.so.0 #2 0xb4448d0c in mir::scene::ThreadedSnapshotStrategy::take_snapshot_of(std::shared_ptr<mir::shell::SurfaceBufferAccess> const&, std::function<void (mir::shell::Snapshot const&)> const&) () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.15 #3 0xb4437fc2 in mir::scene::ApplicationSession::take_snapshot(std::function<void (mir::shell::Snapshot const&)> const&) () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.15 #4 0xa77f33b4 in Application::updateScreenshot() () from /usr/lib/arm-linux-gnueabihf/qt5/imports/Unity-Mir/Unity/Application/libunityapplicationplugin.so #5 0xa77f0800 in ApplicationManager::updateScreenshot(QString const&) () from /usr/lib/arm-linux-gnueabihf/qt5/imports/Unity-Mir/Unity/Application/libunityapplicationplugin.so #6 0xa77ff5f0 in ?? () from /usr/lib/arm-linux-gnueabihf/qt5/imports/Unity-Mir/Unity/Application/libunityapplicationplugin.so -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1281728 Title: Unity8 random freeze on demo image To manage notifications about this bug go to: https://bugs.launchpad.net/unity8/+bug/1281728/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
