[Bug 247175] New: digiKam doesn't exit after closing main window

https://bugs.kde.org/show_bug.cgi?id=247175

           Summary: digiKam doesn't exit after closing main window
           Product: digikam
           Version: 1.3.0
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           1.3.0 (using KDE 4.5.0)
OS:                Linux

If I click close button or select "Album — Exit [Ctrl-Q]", main window closes,
but the application still remains in memory. Even if no other windows are
opened.

Then I need to kill it, because when I try to start it again, there are two
copies of digikam in memory.

Reproducible: Always

Steps to Reproduce:
1. start digikam from konsole
or
2. start digikam from anywhere.

Then try to close it.

Actual Results:  
1. I don't see the command prompt again, need to Ctrl-C.
or
2. open "top", "htop" or use "ps aux" or smth like this, see "digikam" in list.

Expected Results:  
digikam should have disappeared from memory

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--- Comment #1 from Johannes Wienke <languitar semipol de>  2010-08-09 23:19:52 ---
Please start digikam, exit digikam and leave the process running. In another
console find the PID of digikam with ps and start "gdb digikam PID". Inside gdb
type "thread apply all bt" and paste the output here.

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--- Comment #2 from xapienz <kde org xapienz ru>  2010-08-09 23:49:06 ---
Here:

(gdb) thread apply all bt

Thread 6 (Thread 0xb287cb70 (LWP 24339)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x003fc4bc in pthread_cond_wait@@GLIBC_2.3.2 ()
    at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x0466f8e7 in QWaitConditionPrivate::wait (this=0xa47adf8, mutex=0xa47adf4,
time=4294967295)
    at thread/qwaitcondition_unix.cpp:88
#3  QWaitCondition::wait (this=0xa47adf8, mutex=0xa47adf4, time=4294967295) at
thread/qwaitcondition_unix.cpp:160
#4  0x05e1c34a in Digikam::ParkingThread::run (this=0xa47ade8)
    at /build/buildd/digikam-1.3.0/libs/threads/threadmanager.cpp:101
#5  0x0466ed19 in QThreadPrivate::start (arg=0xa47ade8) at
thread/qthread_unix.cpp:266
#6  0x003f7cc9 in start_thread (arg=0xb287cb70) at pthread_create.c:304
#7  0x06f6a73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 5 (Thread 0xb207bb70 (LWP 24340)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x06f5be76 in *__GI___poll (fds=0x6ff3ff4, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x07affc0b in g_poll () from /lib/libglib-2.0.so.0
#3  0x07af25bc in ?? () from /lib/libglib-2.0.so.0
#4  0x07af29c8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0479eea5 in QEventDispatcherGlib::processEvents (this=0x9b88af8,
flags=...) at kernel/qeventdispatcher_glib.cpp:412
#6  0x0476ef29 in QEventLoop::processEvents (this=0xb207b2c0, flags=DWARF-2
expression error: DW_OP_reg operations must be used either alone or in
conjuction with DW_OP_piece.
) at kernel/qeventloop.cpp:149
#7  0x0476f3aa in QEventLoop::exec (this=0xb207b2c0, flags=...) at
kernel/qeventloop.cpp:201
#8  0x0466ba9e in QThread::exec (this=0x9bc31d0) at thread/qthread.cpp:490
#9  0x0466ed19 in QThreadPrivate::start (arg=0x9bc31d0) at
thread/qthread_unix.cpp:266
#10 0x003f7cc9 in start_thread (arg=0xb207bb70) at pthread_create.c:304
#11 0x06f6a73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 4 (Thread 0xb187ab70 (LWP 24341)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x06f5be76 in *__GI___poll (fds=0x6ff3ff4, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x07affc0b in g_poll () from /lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---

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--- Comment #3 from Johannes Wienke <languitar semipol de>  2010-08-09 23:51:06 ---
Please press enter until there is no more output ;)

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--- Comment #4 from xapienz <kde org xapienz ru>  2010-08-09 23:58:04 ---
oh, sorry, I need to have a good sleep =\


(gdb) thread apply all bt

Thread 6 (Thread 0xb287cb70 (LWP 24339)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x003fc4bc in pthread_cond_wait@@GLIBC_2.3.2 ()
    at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x0466f8e7 in QWaitConditionPrivate::wait (this=0xa47adf8, mutex=0xa47adf4,
time=4294967295)
    at thread/qwaitcondition_unix.cpp:88
#3  QWaitCondition::wait (this=0xa47adf8, mutex=0xa47adf4, time=4294967295) at
thread/qwaitcondition_unix.cpp:160
#4  0x05e1c34a in Digikam::ParkingThread::run (this=0xa47ade8)
    at /build/buildd/digikam-1.3.0/libs/threads/threadmanager.cpp:101
#5  0x0466ed19 in QThreadPrivate::start (arg=0xa47ade8) at
thread/qthread_unix.cpp:266
#6  0x003f7cc9 in start_thread (arg=0xb287cb70) at pthread_create.c:304
#7  0x06f6a73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 5 (Thread 0xb207bb70 (LWP 24340)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x06f5be76 in *__GI___poll (fds=0x6ff3ff4, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x07affc0b in g_poll () from /lib/libglib-2.0.so.0
#3  0x07af25bc in ?? () from /lib/libglib-2.0.so.0
#4  0x07af29c8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0479eea5 in QEventDispatcherGlib::processEvents (this=0x9b88af8,
flags=...) at kernel/qeventdispatcher_glib.cpp:412
#6  0x0476ef29 in QEventLoop::processEvents (this=0xb207b2c0, flags=DWARF-2
expression error: DW_OP_reg operations must be used either alone or in
conjuction with DW_OP_piece.
) at kernel/qeventloop.cpp:149
#7  0x0476f3aa in QEventLoop::exec (this=0xb207b2c0, flags=...) at
kernel/qeventloop.cpp:201
#8  0x0466ba9e in QThread::exec (this=0x9bc31d0) at thread/qthread.cpp:490
#9  0x0466ed19 in QThreadPrivate::start (arg=0x9bc31d0) at
thread/qthread_unix.cpp:266
#10 0x003f7cc9 in start_thread (arg=0xb207bb70) at pthread_create.c:304
#11 0x06f6a73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 4 (Thread 0xb187ab70 (LWP 24341)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x06f5be76 in *__GI___poll (fds=0x6ff3ff4, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x07affc0b in g_poll () from /lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#3  0x07af25bc in ?? () from /lib/libglib-2.0.so.0
#4  0x07af29c8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0479eea5 in QEventDispatcherGlib::processEvents (this=0x9bc73f8,
flags=...) at kernel/qeventdispatcher_glib.cpp:412
#6  0x0476ef29 in QEventLoop::processEvents (this=0xb187a2c0, flags=DWARF-2
expression error: DW_OP_reg operations must be used either alone or in
conjuction with DW_OP_piece.
) at kernel/qeventloop.cpp:149
#7  0x0476f3aa in QEventLoop::exec (this=0xb187a2c0, flags=...) at
kernel/qeventloop.cpp:201
#8  0x0466ba9e in QThread::exec (this=0x9bb62a0) at thread/qthread.cpp:490
#9  0x0466ed19 in QThreadPrivate::start (arg=0x9bb62a0) at
thread/qthread_unix.cpp:266
#10 0x003f7cc9 in start_thread (arg=0xb187ab70) at pthread_create.c:304
#11 0x06f6a73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 3 (Thread 0xaa513b70 (LWP 24342)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x003fc864 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:236
#2  0x075b6a2f in ?? () from /usr/lib/libxine.so.1
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0xa9106b70 (LWP 24344)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x06f5be76 in *__GI___poll (fds=0x6ff3ff4, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x07affc0b in g_poll () from /lib/libglib-2.0.so.0
#3  0x07af25bc in ?? () from /lib/libglib-2.0.so.0
#4  0x07af29c8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0479eea5 in QEventDispatcherGlib::processEvents (this=0xa6a24e8,
flags=...) at kernel/qeventdispatcher_glib.cpp:412
#6  0x0476ef29 in QEventLoop::processEvents (this=0xa9106250, flags=DWARF-2
expression error: DW_OP_reg operations must be used either alone or in
conjuction with DW_OP_piece.
) at kernel/qeventloop.cpp:149
#7  0x0476f3aa in QEventLoop::exec (this=0xa9106250, flags=...) at
kernel/qeventloop.cpp:201
#8  0x0466ba9e in QThread::exec (this=0xaaaff78) at thread/qthread.cpp:490
#9  0x097ca81a in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#10 0x0466ed19 in QThreadPrivate::start (arg=0xaaaff78) at
thread/qthread_unix.cpp:266
#11 0x003f7cc9 in start_thread (arg=0xa9106b70) at pthread_create.c:304
#12 0x06f6a73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

---Type <return> to continue, or q <return> to quit---
Thread 1 (Thread 0xb663d740 (LWP 24329)):
#0  0x003f1416 in __kernel_vsyscall ()
#1  0x06f5be76 in *__GI___poll (fds=0x6ff3ff4, nfds=21, timeout=996) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x07affc0b in g_poll () from /lib/libglib-2.0.so.0
#3  0x07af25bc in ?? () from /lib/libglib-2.0.so.0
#4  0x07af29c8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0479eea5 in QEventDispatcherGlib::processEvents (this=0x9a8b698,
flags=...) at kernel/qeventdispatcher_glib.cpp:412
#6  0x014680e5 in QGuiEventDispatcherGlib::processEvents (this=0x9a8b698,
flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#7  0x0476ef29 in QEventLoop::processEvents (this=0xbfb40174, flags=DWARF-2
expression error: DW_OP_reg operations must be used either alone or in
conjuction with DW_OP_piece.
) at kernel/qeventloop.cpp:149
#8  0x0476f3aa in QEventLoop::exec (this=0xbfb40174, flags=...) at
kernel/qeventloop.cpp:201
#9  0x0477392f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#10 0x013a5857 in QApplication::exec () at kernel/qapplication.cpp:3665
#11 0x083bdeab in main (argc=1, argv=0xbfb406f4) at
/build/buildd/digikam-1.3.0/digikam/main.cpp:195
(gdb)

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--- Comment #5 from Johannes Wienke <languitar semipol de>  2010-08-10 00:03:30 ---
Marcel, this looks like something for you ;)

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[Aditya Bhatt]

You're using KDE 4.5.

I'm using svn trunk and Martin is using a 4.5 packages. We get this same problem.

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--- Comment #6 from Aditya Bhatt <adityabhatt1991 gmail com>  2010-08-10 00:05:12 ---
You're using KDE 4.5.

I'm using svn trunk and Martin is using a 4.5 packages. We get this same
problem.

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--- Comment #7 from Johannes Wienke <languitar semipol de>  2010-08-12 09:43:51 ---
*** Bug 247469 has been marked as a duplicate of this bug. ***

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--- Comment #8 from Philippe ROUBACH <philippe roubach free fr>  2010-08-12 10:00:51 ---
i have same pb with konsole and ksysguard

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--- Comment #9 from Johannes Wienke <languitar semipol de>  2010-08-12 10:11:11 ---
Is there a special bug report for KDE 4.5 that summarizes this problem?

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--- Comment #10 from Philippe ROUBACH <philippe roubach free fr>  2010-08-12 11:35:32 ---
don't know if there is a special report about 4.5

but it's a long last pb since 4.2.98 ! (konsole,digikam, ksysguard)

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--- Comment #11 from Johannes Wienke <languitar semipol de>  2010-08-12 11:53:32 ---
Ok, your konsole issues etc. probably are unrelated to this bug.

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--- Comment #12 from Philippe ROUBACH <philippe roubach free fr>  2010-08-12 12:08:13 ---
digikam has also this pb since kde 4.3

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--- Comment #13 from Philippe ROUBACH <philippe roubach free fr>  2010-08-12 19:15:40 ---
is it normal digikam nepomuk service is active even if digikam is closed ?

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[Aditya Bhatt]

I don't think this could have anything to do with nepomuk or digiKam's nepomuk interface, I've tried this with both nepomuk running and not running, and with the digikam nepomuk interface both on and off. Problem persists.

I'm inclined to think that this is caused by the KDE 4.5 libs, probably. Because I didn't see this problem on my stable 4.4 install.

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--- Comment #14 from Aditya Bhatt <adityabhatt1991 gmail com>  2010-08-12 19:41:12 ---
I don't think this could have anything to do with nepomuk or digiKam's
nepomuk interface, I've tried this with both nepomuk running and not
running, and with the digikam nepomuk interface both on and off. Problem
persists.

I'm inclined to think that this is caused by the KDE 4.5 libs, probably.
Because I didn't see this problem on my stable 4.4 install.

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--- Comment #15 from  <tnemeth free fr>  2010-08-13 18:02:05 ---
*** Bug 247550 has been marked as a duplicate of this bug. ***

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--- Comment #16 from Johannes Wienke <languitar semipol de>  2010-08-13 21:27:30 ---
I just found these lines in the kile code:

// BUG 220343: Under some circumstances (Qt 4.5.3 or KDE 4.3 issues (?)) Kile
doesn't terminate when the
// main window is closed. So, we force this here. Everything seems to work fine
with Qt 4.6.
connect(m_mainWindow, SIGNAL(destroyed(QObject*)), kapp, SLOT(quit()));

Can someone with this problem test if this helps?

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--- Comment #17 from Martin Klapetek <martin klapetek gmail com>  2010-08-13 23:44:20 ---
Adding it to digikamapp.cpp indeed does solve this issue. although sometimes
some errorneous behaviour then appears on the console in form of
"Object::disconnect: Unexpected null parameter", but nothing serious. Works for
me.

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