https://bugs.kde.org/show_bug.cgi?id=366385
--- Comment #2 from proton <xpr1...@mail.ru> --- In live cd/usb systems (Kubuntu 16.04.1) no crash report appears. Such a behavior could be done intentionally. The caption of the System Settings window disappears, so I think it is obvious that kwin crashes. I couldn't close the System Settings window using the task manager button. Nothing happened. Plasma didn't crash. I can't or don't know how to provide a backtrace of crashed kwin because no crash report appears. In a freshly installed VM system. (HOST: Kubuntu 16.04.1 LTS ppa:kubuntu-ppa/backports, Virtual Box 5.0.24_Ubuntu r108355, GUEST: Virtual machine Ram 2048, Kubuntu 16.04.1 LTS, sha256sum -b kubuntu-16.04.1-desktop-amd64.iso e97fbadd3219ef41a77aa801bdb52e9a4f3deb3449fcd08d465f865c6b751b3d) it doesn't show a kwin crash report but the caption of the System Settings window disappears, so I think it is obvious that kwin crashed. I can't or don't know how to provide a backtrace of the crashed kwin. After right clicking on the task manager button and trying to close the System Settings window for a couple of times a plasma crash report appears and instantly closes. Such a behavior could be done intentionally. I can't or don't know how to provide a backtrace of the crashed plasma. In my system that is based on Kubuntu 16.04.1 LTS ppa:kubuntu-ppa/backports I can generate a backtrace of crashed kwin, but I couldn't guess packages with debugging symbols for /usr/bin/kwin_x11 /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 The ppa:kubuntu-ppa/backports doesn't have libkf5windowsystem5-dbg. (I installed kwin-dbg libqt5declarative5 qtbase5-dbg qtquick1-5-dbg) Application: kwin_x11 (5.6.5) Qt Version: 5.5.1 Frameworks Version: 5.23.0 Operating System: Linux 4.4.0-31-generic x86_64 Distribution: Ubuntu 16.04.1 LTS -- Information about the crash: <Напишите подробно, что вы делали, когда произошла ошибка.> The crash can be reproduced every time. -- Backtrace: A useful backtrace could not be generated Application: KWin (kwin_x11), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f4e3c9e6940 (LWP 3154))] Thread 4 (Thread 0x7f4d80e16700 (LWP 3560)): #0 0x00007f4e3accebe1 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f4d7c09ed60, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:192 #1 0x00007f4e3accf13e in QEventDispatcherUNIX::processEvents (this=0x7f4d7c051b40, flags=...) at kernel/qeventdispatcher_unix.cpp:607 #2 0x00007f4e3ac78dea in QEventLoop::exec (this=this@entry=0x7f4d80e15c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #3 0x00007f4e3aa958a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503 #4 0x00007f4e353553c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #5 0x00007f4e3aa9a84e in QThreadPrivate::start (arg=0x214d770) at thread/qthread_unix.cpp:331 #6 0x00007f4e361f96fa in start_thread (arg=0x7f4d80e16700) at pthread_create.c:333 #7 0x00007f4e3c4eab5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7f4e0e75e700 (LWP 3244)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f4e39c1ebd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #2 0x00007f4e39c1ec19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #3 0x00007f4e361f96fa in start_thread (arg=0x7f4e0e75e700) at pthread_create.c:333 #4 0x00007f4e3c4eab5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7f4e154ef700 (LWP 3223)): #0 0x00007f4e3c4e0d13 in select () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f4e3accd10f in qt_safe_select (nfds=18, fdread=fdread@entry=0x7f4e08000a78, fdwrite=fdwrite@entry=0x7f4e08000d08, fdexcept=fdexcept@entry=0x7f4e08000f98, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75 #2 0x00007f4e3accec0e in QEventDispatcherUNIX::select (timeout=0x0, exceptfds=0x7f4e08000f98, writefds=0x7f4e08000d08, readfds=0x7f4e08000a78, nfds=<optimized out>, this=0x7f4e080008c0) at kernel/qeventdispatcher_unix.cpp:320 #3 QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f4e080008e0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196 #4 0x00007f4e3accf13e in QEventDispatcherUNIX::processEvents (this=0x7f4e080008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607 #5 0x00007f4e3ac78dea in QEventLoop::exec (this=this@entry=0x7f4e154eec60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007f4e3aa958a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007f4e353553c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f4e3aa9a84e in QThreadPrivate::start (arg=0x13bd140) at thread/qthread_unix.cpp:331 #9 0x00007f4e361f96fa in start_thread (arg=0x7f4e154ef700) at pthread_create.c:333 #10 0x00007f4e3c4eab5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f4e3c9e6940 (LWP 3154)): [KCrash Handler] #6 0x00007f4e3526e6d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f4e35215685 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f4e352ae8b2 in QV4::Runtime::getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #9 0x00007f4e0c07cc79 in ?? () #10 0x00007f4e35a83e62 in QQuickItem::staticMetaObject () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #11 0x00007f4d7b801260 in ?? () #12 0x0000000002018440 in ?? () #13 0x00007f4d7b801258 in ?? () #14 0x00000000025f8be0 in ?? () #15 0x00007f4e3afe0059 in QVariantConstructor<(anonymous namespace)::GuiTypesFilter>::CallConstructor<QIcon, true>::CallConstructor (this=<synthetic pointer>, tc=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:339 #16 QVariantConstructor<(anonymous namespace)::GuiTypesFilter>::FilteredConstructor<QIcon, true>::FilteredConstructor (this=<optimized out>, tc=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:362 #17 QVariantConstructor<(anonymous namespace)::GuiTypesFilter>::delegate<QIcon> (this=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:383 #18 QMetaTypeSwitcher::switcher<void, QVariantConstructor<(anonymous namespace)::GuiTypesFilter> > (data=0x0, type=<optimized out>, logic=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qmetatypeswitcher_p.h:68 #19 (anonymous namespace)::construct (x=0x24b08c0, copy=0x7ffccbfea9a0) at kernel/qguivariant.cpp:101 #20 0x00000000025f8be0 in ?? () #21 0x00000000025f8be0 in ?? () #22 0x00000000024e6c58 in ?? () #23 0x0000000000000003 in ?? () #24 0x0000000001f56420 in ?? () #25 0x00007f4e354972a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #26 0x00007f4d7b8011f8 in ?? () #27 0x00000000025f8be0 in ?? () #28 0x00007ffccbfeaf60 in ?? () #29 0x00007f4e0c1b7570 in ?? () #30 0x0000000000000000 in ?? () -- You are receiving this mail because: You are watching all bug changes.
