https://bugs.kde.org/show_bug.cgi?id=372448
Bug ID: 372448
Summary: Switching back from separate session to 4k monitor
crashed plasmashell
Product: plasmashell
Version: 5.5.5
Platform: Ubuntu Packages
OS: Linux
Status: UNCONFIRMED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: k...@davidedmundson.co.uk
Reporter: k...@kolivas.org
CC: bhus...@gmail.com, plasma-b...@kde.org
Target Milestone: 1.0
Application: plasmashell (5.5.5)
Qt Version: 5.5.1
Operating System: Linux 4.8.7-ck7+ x86_64
Distribution: Ubuntu 16.04.1 LTS
-- Information about the crash:
- What I was doing when the application crashed:
I had opened a second user session with sddm and after using that session
switched back to the first session with ctrl-alt-F7 and plasmashell had crashed
sometime between switching to and from the other session. The monitor attached
is a 4k monitor which requires two panels setup for each virtual screen that
corresponds to each half of the 4k monitor and one panel tends to regularly
disappear mandating a plasmashell restart which I had performed half a dozen
times already before this crash appeared.
-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7f58f40d98c0 (LWP 27260))]
Thread 8 (Thread 0x7f583dbf7700 (LWP 27270)):
[KCrash Handler]
#6 0x00007f58ee7a150d in __strstr_sse2_unaligned () at
../sysdeps/x86_64/multiarch/strstr-sse2-unaligned.S:40
#7 0x00007f58f2164aca in QSGRenderContext::initialize(QOpenGLContext*) () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8 0x00007f58f2188409 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x198faf0) at
thread/qthread_unix.cpp:331
#10 0x00007f58edfd570a in start_thread (arg=0x7f583dbf7700) at
pthread_create.c:333
#11 0x00007f58ee7fe82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 7 (Thread 0x7f583e3f8700 (LWP 27269)):
#0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007f58eb58839c in g_main_context_iterate (priority=2147483647, n_fds=1,
fds=0x7f5838003060, timeout=<optimized out>, context=0x7f5838000990) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2 0x00007f58eb58839c in g_main_context_iterate
(context=context@entry=0x7f5838000990, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f5838000990,
may_block=may_block@entry=1) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4 0x00007f58ef11f7eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f58380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5 0x00007f58ef0c6b4a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f583e3f7c90, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#6 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:503
#7 0x00007f58f2111ed6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x1a81cd0) at
thread/qthread_unix.cpp:331
#9 0x00007f58edfd570a in start_thread (arg=0x7f583e3f8700) at
pthread_create.c:333
#10 0x00007f58ee7fe82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 6 (Thread 0x7f58c5109700 (LWP 27268)):
#0 0x00007f58edfdb3b0 in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f58f3b30bd4 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2 0x00007f58f3b30c19 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3 0x00007f58edfd570a in start_thread (arg=0x7f58c5109700) at
pthread_create.c:333
#4 0x00007f58ee7fe82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 5 (Thread 0x7f58c694d700 (LWP 27267)):
#0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007f58eb58839c in g_main_context_iterate (priority=2147483647, n_fds=1,
fds=0x7f58c0003070, timeout=<optimized out>, context=0x7f58c0000990) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2 0x00007f58eb58839c in g_main_context_iterate
(context=context@entry=0x7f58c0000990, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58c0000990,
may_block=may_block@entry=1) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4 0x00007f58ef11f7eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f58c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5 0x00007f58ef0c6b4a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f58c694cce0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#6 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:503
#7 0x00007f58f178b3c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x1673450) at
thread/qthread_unix.cpp:331
#9 0x00007f58edfd570a in start_thread (arg=0x7f58c694d700) at
pthread_create.c:333
#10 0x00007f58ee7fe82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 4 (Thread 0x7f58ccae3700 (LWP 27266)):
#0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007f58eb58839c in g_main_context_iterate (priority=2147483647, n_fds=1,
fds=0x7f58c8002e70, timeout=<optimized out>, context=0x7f58c8000990) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2 0x00007f58eb58839c in g_main_context_iterate
(context=context@entry=0x7f58c8000990, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58c8000990,
may_block=may_block@entry=1) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4 0x00007f58ef11f7eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f58c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5 0x00007f58ef0c6b4a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f58ccae2ce0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#6 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:503
#7 0x00007f58f178b3c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x15eb170) at
thread/qthread_unix.cpp:331
#9 0x00007f58edfd570a in start_thread (arg=0x7f58ccae3700) at
pthread_create.c:333
#10 0x00007f58ee7fe82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 3 (Thread 0x7f58dd3f8700 (LWP 27265)):
#0 0x00007f58f40a987b in _dl_update_slotinfo (req_modid=1) at dl-tls.c:645
#1 0x00007f58f40a9aac in update_get_addr (ti=0x7f58ef313788) at dl-tls.c:802
#2 0x00007f58eeee7702 in QThreadData::current(bool) () at
thread/qthread_unix.cpp:181
#3 0x00007f58eeee7702 in QThreadData::current(bool)
(createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:212
#4 0x00007f58ef11ed4a in postEventSourcePrepare(GSource*, gint*)
(s=0x7f58d00012d0, timeout=timeout@entry=0x7f58dd3f7b24) at
kernel/qeventdispatcher_glib.cpp:247
#5 0x00007f58eb58792d in g_main_context_prepare
(context=context@entry=0x7f58d0000990, priority=priority@entry=0x7f58dd3f7bb0)
at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3442
#6 0x00007f58eb5882cb in g_main_context_iterate
(context=context@entry=0x7f58d0000990, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820
#7 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58d0000990,
may_block=may_block@entry=1) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#8 0x00007f58ef11f7eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f58d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#9 0x00007f58ef0c6b4a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f58dd3f7ce0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#10 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:503
#11 0x00007f58f178b3c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x12fd210) at
thread/qthread_unix.cpp:331
#13 0x00007f58edfd570a in start_thread (arg=0x7f58dd3f8700) at
pthread_create.c:333
#14 0x00007f58ee7fe82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 2 (Thread 0x7f58e048d700 (LWP 27263)):
#0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007f58f28b7c62 in _xcb_conn_wait (__timeout=-1, __nfds=1,
__fds=0x7f58e048cc00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2 0x00007f58f28b7c62 in _xcb_conn_wait (c=c@entry=0x1206e30,
cond=cond@entry=0x1206e70, vector=vector@entry=0x0, count=count@entry=0x0) at
../../src/xcb_conn.c:459
#3 0x00007f58f28b98d7 in xcb_wait_for_event (c=0x1206e30) at
../../src/xcb_in.c:693
#4 0x00007f58e2c0d629 in QXcbEventReader::run() (this=0x1214fe0) at
qxcbconnection.cpp:1253
#5 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x1214fe0) at
thread/qthread_unix.cpp:331
#6 0x00007f58edfd570a in start_thread (arg=0x7f58e048d700) at
pthread_create.c:333
#7 0x00007f58ee7fe82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 1 (Thread 0x7f58f40d98c0 (LWP 27260)):
#0 0x00007f58edfdb3b0 in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f58eeee9a5b in QWaitCondition::wait(QMutex*, unsigned long)
(time=18446744073709551615, this=0x19d2dc0) at
thread/qwaitcondition_unix.cpp:136
#2 0x00007f58eeee9a5b in QWaitCondition::wait(QMutex*, unsigned long)
(this=<optimized out>, mutex=0x198fb30, time=18446744073709551615) at
thread/qwaitcondition_unix.cpp:208
#3 0x00007f58f2184bc6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4 0x00007f58f218709c in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5 0x00007f58f2187733 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6 0x00007f58ef4142b5 in QWindow::event(QEvent*) (this=0x1985f60,
ev=<optimized out>) at kernel/qwindow.cpp:2060
#7 0x00007f58f21ba871 in QQuickWindow::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8 0x000000000043f206 in DesktopView::event(QEvent*) (this=0x1985f60,
e=0x7fffc45619e0) at
/build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/desktopview.cpp:205
#9 0x00007f58efbcc05c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=this@entry=0x11f4380, receiver=receiver@entry=0x1985f60,
e=e@entry=0x7fffc45619e0) at kernel/qapplication.cpp:3716
#10 0x00007f58efbd1516 in QApplication::notify(QObject*, QEvent*)
(this=0x7fffc4561e00, receiver=0x1985f60, e=0x7fffc45619e0) at
kernel/qapplication.cpp:3499
#11 0x00007f58ef0c938b in QCoreApplication::notifyInternal(QObject*, QEvent*)
(this=0x7fffc4561e00, receiver=receiver@entry=0x1985f60,
event=event@entry=0x7fffc45619e0) at kernel/qcoreapplication.cpp:965
#12 0x00007f58ef40c4ac in
QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*)
(event=0x7fffc45619e0, receiver=0x1985f60) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#13 0x00007f58ef40c4ac in
QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*)
(e=0x1a89cb0) at kernel/qguiapplication.cpp:2663
#14 0x00007f58ef40d21d in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
(e=e@entry=0x1a89cb0) at kernel/qguiapplication.cpp:1658
#15 0x00007f58ef3f0f08 in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(flags=...) at kernel/qwindowsysteminterface.cpp:625
#16 0x00007f58e2c3f060 in userEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (source=<optimized out>) at
eventdispatchers/qeventdispatcher_glib.cpp:70
#17 0x00007f58eb5881a7 in g_main_context_dispatch (context=0x7f58d80016f0) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3154
#18 0x00007f58eb5881a7 in g_main_context_dispatch
(context=context@entry=0x7f58d80016f0) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3769
#19 0x00007f58eb588400 in g_main_context_iterate
(context=context@entry=0x7f58d80016f0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3840
#20 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58d80016f0,
may_block=may_block@entry=1) at
/build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#21 0x00007f58ef11f7cf in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x1245fe0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f58ef0c6b4a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fffc4561ca0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#23 0x00007f58ef0cebec in QCoreApplication::exec() () at
kernel/qcoreapplication.cpp:1229
#24 0x00007f58ef402bfc in QGuiApplication::exec() () at
kernel/qguiapplication.cpp:1542
#25 0x00007f58efbc8495 in QApplication::exec() () at
kernel/qapplication.cpp:2976
#26 0x0000000000432d4a in main(int, char**) (argc=3, argv=<optimized out>) at
/build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181
Reported using DrKonqi
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