[kwin] [Bug 363224] Kwin crashes from time to time (this time using Virtual Machine Manager)

[Ronny Standtke via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=363224

Ronny Standtke  changed:

   What|Removed |Added

 CC||ronny.stand...@gmx.net

--- Comment #19 from Ronny Standtke  ---
Created attachment 101553
  --> https://bugs.kde.org/attachment.cgi?id=101553=edit
my .xsession-errors file after the crash

I just installed Debian testing (64 Bit), selected KDE as desktop and run into
exactly this bug. I used mostly VirtualBox and Synaptic in the sessions when
the crash occurs. Attached is my .xsession-errors file from after the crash. I
hope this helps somehow to find and fix the bug.

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[plasmashell] [Bug 359189] New: Crash at login

[Ronny Standtke via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359189

Bug ID: 359189
   Summary: Crash at login
   Product: plasmashell
   Version: 5.5.3
  Platform: Ubuntu Packages
OS: Linux
Status: UNCONFIRMED
  Keywords: drkonqi
  Severity: crash
  Priority: NOR
 Component: general
  Assignee: k...@davidedmundson.co.uk
  Reporter: ronny.stand...@gmx.net
CC: bhus...@gmail.com, plasma-b...@kde.org

Application: plasmashell (5.5.3)

Qt Version: 5.5.1
Operating System: Linux 4.2.0-27-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:

I upgraded to the latest version of KDE and was greeted with this wonderful
crash. I installed all debug packages I could possibly find and produced this
nice backtrace. I hope it helps fixing some nasty bugs.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f56bdf3a7c0 (LWP 2130))]

Thread 8 (Thread 0x7f56aa200700 (LWP 2132)):
#0  0x7f56b86428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x7f56bc710bd2 in _xcb_conn_wait (__timeout=-1, __nfds=1,
__fds=0x7f56aa1ffd00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x7f56bc710bd2 in _xcb_conn_wait (c=c@entry=0xc1ffa0,
cond=cond@entry=0xc1ffe0, vector=vector@entry=0x0, count=count@entry=0x0) at
../../src/xcb_conn.c:459
#3  0x7f56bc71274f in xcb_wait_for_event (c=0xc1ffa0) at
../../src/xcb_in.c:623
#4  0x7f56ac97b7e9 in QXcbEventReader::run() (this=0xc2e120) at
qxcbconnection.cpp:1229
#5  0x7f56b8d38a6e in QThreadPrivate::start(void*) (arg=0xc2e120) at
thread/qthread_unix.cpp:331
#6  0x7f56b7e246aa in start_thread (arg=0x7f56aa200700) at
pthread_create.c:333
#7  0x7f56b864deed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f56a33ea700 (LWP 2431)):
#0  0x7f56b53d631b in g_source_iter_clear (iter=iter@entry=0x7f56a33e9c30)
at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:973
#1  0x7f56b53d87f8 in g_main_context_prepare
(context=context@entry=0x7f569c000990, priority=priority@entry=0x7f56a33e9cb0)
at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3505
#2  0x7f56b53d911b in g_main_context_iterate
(context=context@entry=0x7f569c000990, block=block@entry=1,
dispatch=dispatch@entry=1, self=) at
/build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3820
#3  0x7f56b53d92fc in g_main_context_iteration (context=0x7f569c000990,
may_block=may_block@entry=1) at
/build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3901
#4  0x7f56b8f7050b in
QEventDispatcherGlib::processEvents(QFlags)
(this=0x7f569c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x7f56b8f1750a in
QEventLoop::exec(QFlags)
(this=this@entry=0x7f56a33e9de0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#6  0x7f56b8d33ac4 in QThread::exec() (this=) at
thread/qthread.cpp:503
#7  0x7f56bb5e1c35 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x7f56b8d38a6e in QThreadPrivate::start(void*) (arg=0xcfc9b0) at
thread/qthread_unix.cpp:331
#9  0x7f56b7e246aa in start_thread (arg=0x7f56a33ea700) at
pthread_create.c:333
#10 0x7f56b864deed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f5696785700 (LWP 2445)):
#0  0x7f56b86428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x7f56b53d91ec in g_main_context_iterate (priority=2147483647, n_fds=1,
fds=0x7f5690002e70, timeout=, context=0x7f569990) at
/build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:4135
#2  0x7f56b53d91ec in g_main_context_iterate
(context=context@entry=0x7f569990, block=block@entry=1,
dispatch=dispatch@entry=1, self=) at
/build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3835
#3  0x7f56b53d92fc in g_main_context_iteration (context=0x7f569990,
may_block=may_block@entry=1) at
/build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3901
#4  0x7f56b8f7050b in
QEventDispatcherGlib::processEvents(QFlags)
(this=0x7f5698c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x7f56b8f1750a in
QEventLoop::exec(QFlags)
(this=this@entry=0x7f5696784de0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#6  0x7f56b8d33ac4 in QThread::exec() (this=) at
thread/qthread.cpp:503
#7  0x7f56bb5e1c35 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x7f56b8d38a6e in QThreadPrivate::start(void*) (arg=0xde9360) at
thread/qthread_unix.cpp:331
#9  0x7f56b7e246aa in start_thread (arg=0x7f5696785700) at
pthread_create.c:333
#10 0x7f56b864deed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f56949d5700 (LWP 2469)):
#0  0x7f56b53d87f8 in g_main_context_prepare
(context=context@entry=0x7f5688000990,