Version 4.8.5 from ubuntu precise updates. Reproducible: Sometimes Steps to Reproduce: Almost every time i click Practice/Practice in the menu, it crashes.
Created attachment 84831 [details] Valgrind log for debugging unfortunately, there are no parley debug symbols: https://bugs.launchpad.net/ubuntu/+source/parley/+bug/1272420 so i don’t know how useful this is.
Without debug symbols I do not see much hope to track this down. Since there are no debug symbols, please either ask at your distribution's channel if they can help you with creating them or compile Parley by yourself in "Debug" mode (it is not hard if you know the words "make" and "cmake"). You can get help on compiling Parley also, e.g., at the #kde-devel or #kde-edu IRC channels.
the link i gave is about the missing symbols :)
Ubuntu 12.04.4 LTS Qt: 4.8.2 KDE Development Platform: 4.12.3 Application: Parley (parley), signal: Segmentation fault Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0xb77b5740 (LWP 4126))] Thread 2 (Thread 0xb345cb40 (LWP 4128)): #0 0x0068a416 in __kernel_vsyscall () #1 0x07a0325b in read () from /lib/i386-linux-gnu/libc.so.6 #2 0x0284a6ce in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #3 0x0280bb92 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0 #4 0x0280c002 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #5 0x0280c1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #6 0x0115cde7 in QEventDispatcherGlib::processEvents (this=0xb5300468, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #7 0x011286ad in QEventLoop::processEvents (this=0xb345c240, flags=...) at kernel/qeventloop.cpp:149 #8 0x01128949 in QEventLoop::exec (this=0xb345c240, flags=...) at kernel/qeventloop.cpp:204 #9 0x01011a1c in QThread::exec (this=0x858b368) at thread/qthread.cpp:501 #10 0x01105cfd in QInotifyFileSystemWatcherEngine::run (this=0x858b368) at io/qfilesystemwatcher_inotify.cpp:248 #11 0x01014eb0 in QThreadPrivate::start (arg=0x858b368) at thread/qthread_unix.cpp:307 #12 0x00d83d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0 #13 0x07a13bae in clone () from /lib/i386-linux-gnu/libc.so.6 Thread 1 (Thread 0xb77b5740 (LWP 4126)): [KCrash Handler] #7 0x0113ee18 in QMetaObject::changeGuard (ptr=0x858ce7c, o=0x0) at kernel/qobject.cpp:461 #8 0x022098d9 in operator= (p=<optimized out>, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qpointer.h:68 #9 QMenuPrivate::activateAction (this=0x858ce7c, action=0x8573d58, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1133 #10 0x0220c595 in QMenu::mouseReleaseEvent (this=0x856ff78, e=0xbfcfd714) at widgets/qmenu.cpp:2360 #11 0x01a95bcc in KMenu::mouseReleaseEvent (this=0x856ff78, e=0xbfcfd714) at ../../kdeui/widgets/kmenu.cpp:464 #12 0x01da1ffc in QWidget::event (this=0x856ff78, event=0xbfcfd714) at kernel/qwidget.cpp:8371 #13 0x0220b01c in QMenu::event (this=0x856ff78, e=0xbfcfd714) at widgets/qmenu.cpp:2469 #14 0x01d47df4 in notify_helper (e=0xbfcfd714, receiver=0x856ff78, this=0x83e7950) at kernel/qapplication.cpp:4556 #15 QApplicationPrivate::notify_helper (this=0x83e7950, receiver=0x856ff78, e=0xbfcfd714) at kernel/qapplication.cpp:4528 #16 0x01d4de74 in QApplication::notify (this=0x83e7950, receiver=0x856ff78, e=0xbfcfd714) at kernel/qapplication.cpp:4099 #17 0x019b71e1 in KApplication::notify (this=0xbfcfdf60, receiver=0x856ff78, event=0xbfcfd714) at ../../kdeui/kernel/kapplication.cpp:311 #18 0x01129e0e in QCoreApplication::notifyInternal (this=0xbfcfdf60, receiver=0x856ff78, event=0xbfcfd714) at kernel/qcoreapplication.cpp:915 #19 0x01d48db5 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #20 QApplicationPrivate::sendMouseEvent (receiver=0x856ff78, event=0xbfcfd714, alienWidget=0x0, nativeWidget=0x856ff78, buttonDown=0x26dccf4, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3167 #21 0x01dd56f2 in QETWidget::translateMouseEvent (this=0x856ff78, event=0xbfcfdbcc) at kernel/qapplication_x11.cpp:4551 #22 0x01dd3b2d in QApplication::x11ProcessEvent (this=0xbfcfdf60, event=0xbfcfdbcc) at kernel/qapplication_x11.cpp:3732 #23 0x01e00e1c in x11EventSourceDispatch (s=0x83db468, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #24 0x0280bd46 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0 #25 0x0280c0e5 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #26 0x0280c1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #27 0x0115cd87 in QEventDispatcherGlib::processEvents (this=0x83b5858, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #28 0x01e00a1a in QGuiEventDispatcherGlib::processEvents (this=0x83b5858, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #29 0x011286ad in QEventLoop::processEvents (this=0xbfcfdec4, flags=...) at kernel/qeventloop.cpp:149 #30 0x01128949 in QEventLoop::exec (this=0xbfcfdec4, flags=...) at kernel/qeventloop.cpp:204 #31 0x0112e34a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187 #32 0x01d459c4 in QApplication::exec () at kernel/qapplication.cpp:3817 #33 0x0806f96c in main (argc=6357104, argv=0x680074) at /home/ansa/Downloads/Zdroj/src/main.cpp:139
This is a duplicate of Bug 257829
Ansa, it could also be a Qt bug. Is this reproducible with Qt 4.8.5 or Qt 4.8.6?
Qt 4.8.2 is the latest version in Kubuntu's repositories (for Ubuntu 12.04). I will check it again when I upgrade to 14.04 but I expect I might not have time to do so before mid June.
*** Bug 257829 has been marked as a duplicate of this bug. ***
I confirm that the bug persists on the current master branch (version 1.1.1 using KDE development platform 4.13.3; Qt: 4.8.6).
Thanks for the update, changing bug status.
Dear Bug Submitter, This bug has been stagnant for a long time. Could you help us out and re-test if the bug is valid in the latest version? I am setting the status to NEEDSINFO pending your response, please change the Status back to REPORTED when you respond. Thank you for helping us make KDE software even better for everyone!
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!