https://bugs.kde.org/show_bug.cgi?id=411340
Bug ID: 411340
Summary: Segfault when started with external docking station
using Displaylink and 2 monitors attached
Product: kwin
Version: 5.16.4
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: r...@zurich.ibm.com
Target Milestone: ---
Application: kwin_x11 (5.16.4)
Qt Version: 5.12.2
Frameworks Version: 5.61.0
Operating System: Linux 5.0.0-25-generic x86_64
Distribution: Ubuntu 19.04
-- Information about the crash:
1. Connected docking station with 2 external displays
2. Powered on
3. Logged in.
4. Segfault happend
I am using DisplayLink 5.2.14.
-- Backtrace:
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 0x7f23a7056880 (LWP 2273))]
Thread 2 (Thread 0x7f23a5553700 (LWP 2330)):
#0 0x00007f23aef96826 in __GI_ppoll (fds=0x7f239800b498, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1 0x00007f23adb01041 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f23adb024b9 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f23adab05bb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f23ad8fb2c6 in QThread::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f23abcb5565 in () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#6 0x00007f23ad8fc612 in () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f23aca9d182 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#8 0x00007f23aefa2b1f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f23a7056880 (LWP 2273)):
[KCrash Handler]
#5 0x00007f23aebf60b7 in () at /lib/x86_64-linux-gnu/libkwin.so.5
#6 0x00007f23aec030b8 in KWin::Workspace::init() () at
/lib/x86_64-linux-gnu/libkwin.so.5
#7 0x00007f23aec038de in KWin::Workspace::Workspace(QString const&) () at
/lib/x86_64-linux-gnu/libkwin.so.5
#8 0x00007f23aec774e4 in KWin::Application::createWorkspace() () at
/lib/x86_64-linux-gnu/libkwin.so.5
#9 0x00007f23af077c78 in () at /lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#10 0x00007f23adadb563 in QMetaObject::activate(QObject*, int, int, void**) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f23af078126 in () at /lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#12 0x00007f23adadb563 in QMetaObject::activate(QObject*, int, int, void**) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f23ae9a8da3 in () at /lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#14 0x00007f23ae9a9559 in KSelectionOwner::filterEvent(void*) () at
/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#15 0x00007f23adaaf44f in
QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f23a6928580 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*)
() at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#17 0x00007f23a692950d in
QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#18 0x00007f23a6953a1c in () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#19 0x00007f23adab05bb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f23adab85e2 in QCoreApplication::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f23af079df8 in kdemain () at
/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#22 0x00007f23aeeabb6b in __libc_start_main (main=0x556c3fec2050, argc=3,
argv=0x7ffd9bc1d388, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd9bc1d378) at ../csu/libc-start.c:308
#23 0x0000556c3fec208a in _start ()
[Inferior 1 (process 2273) detached]
Reported using DrKonqi
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