.
Thread 2 (process 3495):
#0  0x00007fda16d153c2 in select () from /lib/libc.so.6
No symbol table info available.
#1  0x00007fda17a96f31 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#2  0x00007fda179d1445 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#3  0x00007fda1775da04 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#4  0x00007fda16d1c7bd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#5  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (process 3494):
#0  0x00007fda17a145f8 in QString::fromLocal8Bit ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#1  0x00007fda17ab8cbc in QCoreApplication::arguments ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#2  0x00007fda17fbbb91 in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#3  0x00007fda17fbc929 in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#4  0x00007fda15df84ef in _SmcProcessMessage (iceConn=0x11d6800, 
    clientData=<value optimized out>, opcode=<value optimized out>, length=1, 
    swap=<value optimized out>, replyWait=<value optimized out>, 
    replyReadyRet=0x7fff138aed38) at ../../src/sm_process.c:252
	errVal = 255 'ÿ'
	errOffset = <value optimized out>
#5  0x00007fda15be900c in IceProcessMessages (iceConn=0x11d6800, 
    replyWait=0x0, replyReadyRet=0x0) at ../../src/process.c:343
	header = (iceMsg *) 0x11d7280
	replyReady = 0
	useThisReplyWait = (IceReplyWaitInfo *) 0x0
	retStatus = <value optimized out>
#6  0x00007fda17fa510f in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#7  0x00007fda17accddc in QMetaObject::activate ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#8  0x00007fda17b02e9e in QSocketNotifier::activated ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#9  0x00007fda17ad1773 in QSocketNotifier::event ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#10 0x00007fda17f4aefc in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#11 0x00007fda17f521ce in QApplication::notify () from /usr/lib/libQtGui.so.4
No symbol table info available.
#12 0x00007fda17ab7c2c in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#13 0x00007fda17ae042a in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#14 0x00007fda15734bbe in g_main_context_dispatch ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#15 0x00007fda15738588 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#16 0x00007fda157386b0 in g_main_context_iteration ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#17 0x00007fda17ae01a6 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#18 0x00007fda17fdf4be in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#19 0x00007fda17ab6532 in QEventLoop::processEvents ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#20 0x00007fda17ab6904 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
No symbol table info available.
#21 0x00007fda17ab8ab9 in QCoreApplication::exec ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#22 0x0000000000406250 in main ()
No locals.