[Konsole-devel] [konsole] [Bug 357552] New: random Konsole crashes when switching from external monitor to laptop and viceversa

[smkr via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=357552

            Bug ID: 357552
           Summary: random Konsole crashes when switching from external
                    monitor to laptop and viceversa
           Product: konsole
           Version: 15.08.3
          Platform: Fedora RPMs
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: steve.mckuhr at gmail.com

Application: konsole (15.08.3)

Qt Version: 5.5.1
Operating System: Linux 4.2.8-300.fc23.x86_64 x86_64
Distribution: "Fedora release 23 (Twenty Three)"

-- Information about the crash:
- What I was doing when the application crashed:
The crash happens when switching from external monitor to laptop screen or
viceversa as described in bug 351025 comment 16.

While performing the switch to/from external monitor/laptop screen I've also
noticed a couple of weird Konsole behaviors:

1. If Konsole doesn't crash and there are several Konsole windows spread across
multiple desktops *all* Konsole windows will get moved to the current desktop.
I've tested with 3 Konsole windows opened on desktops 1 to 3. Changed to
desktop 3 before undocking laptop followed by a Ctrl-Alt-F2 and Ctrl-Alt-F1 and
all Konsole windows got moved to desktop 3.

2.  A long 'ls' listing -- long enough to fill the screen top to bottom -- will
result in only  the few bottom lines actually srolling up with the rest of the
screen remaining unchanged. A clear screen (Ctrl-L) will leave traces of output
on the screen. Similar  behavior if I scroll down in a 'vim' Konsole session or
a 'man' page, or 'less' a file.

None of the above behaviors happens with RoxTerm.

-- Backtrace:
Application: Konsole (konsole), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[KCrash Handler]
#5  QXcbScreen::mapFromNative (this=0x0, pos=...) at qxcbscreen.cpp:249
#6  0x00007f789788e9aa in QXcbWindow::handleEnterNotifyEvent
(this=0x560b971063b0, event=<optimized out>) at qxcbwindow.cpp:2327
#7  0x00007f7897877afd in QXcbConnection::handleXcbEvent
(this=this at entry=0x560b96fb5a10, event=event at entry=0x7f78900c54d0) at
qxcbconnection.cpp:1083
#8  0x00007f7897878433 in QXcbConnection::processXcbEvents
(this=0x560b96fb5a10) at qxcbconnection.cpp:1527
#9  0x00007f78ade681b1 in QObject::event (this=0x560b96fb5a10, e=<optimized
out>) at kernel/qobject.cpp:1239
#10 0x00007f78aeb1e41c in QApplicationPrivate::notify_helper
(this=this at entry=0x560b96fc3560, receiver=receiver at entry=0x560b96fb5a10,
e=e at entry=0x7f7890011870) at kernel/qapplication.cpp:3716
#11 0x00007f78aeb238e6 in QApplication::notify (this=0x7ffdfff31d30,
receiver=0x560b96fb5a10, e=0x7f7890011870) at kernel/qapplication.cpp:3499
#12 0x00007f78ade3877b in QCoreApplication::notifyInternal
(this=0x7ffdfff31d30, receiver=0x560b96fb5a10,
event=event at entry=0x7f7890011870) at kernel/qcoreapplication.cpp:965
#13 0x00007f78ade3ab76 in QCoreApplication::sendEvent (event=0x7f7890011870,
receiver=<optimized out>) at kernel/qcoreapplication.h:224
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver at entry=0x0,
event_type=event_type at entry=0, data=0x560b96f76600) at
kernel/qcoreapplication.cpp:1593
#15 0x00007f78ade3b058 in QCoreApplication::sendPostedEvents
(receiver=receiver at entry=0x0, event_type=event_type at entry=0) at
kernel/qcoreapplication.cpp:1451
#16 0x00007f78ade8eae3 in postEventSourceDispatch (s=0x560b96ffd070) at
kernel/qeventdispatcher_glib.cpp:271
#17 0x00007f78a8801e3a in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#18 0x00007f78a88021d0 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#19 0x00007f78a880227c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#20 0x00007f78ade8eeef in QEventDispatcherGlib::processEvents
(this=0x560b970063c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#21 0x00007f78ade35f0a in QEventLoop::exec (this=this at entry=0x7ffdfff31be0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#22 0x00007f78ade3dfec in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1229
#23 0x00007f78ae36c60c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1527
#24 0x00007f78aeb1a855 in QApplication::exec () at kernel/qapplication.cpp:2976
#25 0x00007f78b4c00986 in kdemain (argc=<optimized out>, argv=<optimized out>)
at ../../src/main.cpp:113
#26 0x00007f78acf78580 in __libc_start_main () from /lib64/libc.so.6
#27 0x0000560b9531aba9 in _start ()

Possible duplicates by query: bug 355585.

Reported using DrKonqi

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