hanging in kdialog
Jos van den Oever
jos at vandenoever.info
Mon Jul 31 07:55:11 BST 2017
Op zondag 30 juli 2017 10:25:39 CEST schreef u:
> There's a review requests from me on KNotification that fixes this.
Which one is that? I know dvratil submitted one to fix a timeout issue that
makes knotifications think it is connected to a notifications service when it
is not.
The issue I'm seeing is that when you run on a desktop with plasma installed,
plasma will install a fake dbus service (plasma_waitforname) for
org.freedesktop.Notifications.
This 'service' assumes that plasma is starting up and does nothing but wait
for plasma to become available. This assumption is wrong when the user has
plasma installed but is currently running a different desktop for which there
is no org.freedesktop.Notifications or for which org.freedesktop.Notifications
has not started yet.
A 'solution' is to deinstall plasma_waitforname, but that's not a nice for a
user that likes to have multiple desktops installed. Another workaround is to
hard delete plasma_waitforname or org.kde.plasma.Notifications.service.
> For a temporary fix, disable whatever notification kdialog is using from
> systemsettings.
I'm not sure that is a fix. Does this affect knotifications and stop it from
sending the notification or does it still send it via dbus and then let plasma
determine whether or not to show / play the notification?
> Or start a notification daemon, or remove the plasma notification service
> file in the dbus service dir.
That might be an option. I see a whole list here:
https://wiki.archlinux.org/index.php/Desktop_notifications
How would the system know which StartServiceByName to start if multiple
services have been installed?
https://dbus.freedesktop.org/doc/dbus-specification.html#bus-messages-start-service-by-name
I realize that the current behavior comes from the desire to have no naked
notifications when plasma starts. Perhaps it is better to move the dbus
registration of org.freedesktop.Notifications forward instead of relying on a
binary like plasma_waitforname.
Cheers,
Jos
>
> David
>
> On 30 Jul 2017 09:22, "Jos van den Oever" <jos at vandenoever.info> wrote:
> > Hi all,
> >
> > KDialog can get stuck waiting for some dbus reply in certain setups. Here
> > is a
> > short command-line that demonstrates this.
> >
> > docker run -e DISPLAY=$DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix -ti --rm
> > kdeneon/plasma:dev-unstable kdialog --msgbox 'wait for it'
> >
> > This runs kdialog in a docker environment. Some services are not available
> > there. The hang is due to a KNotification as you can see from the
> > backtrace.
> >
> > I've also attached the output from dbus-monitor with an indication of
> > where
> > the hang starts.
> >
> > Not all arguments to kdialog have this problem. Only the ones that try to
> > start org.freedesktop.Notifications.
> >
> > Shouldn't that call fail faster?
> >
> > Cheers,
> > Jos
> >
> > neon at fecce5c790e0:~$ gdb /usr/bin/kdialog
> > GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1
> > Copyright (C) 2016 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.
> > html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> > and "show warranty" for details.
> > This GDB was configured as "x86_64-linux-gnu".
> > Type "show configuration" for configuration details.
> > For bug reporting instructions, please see:
> > <http://www.gnu.org/software/gdb/bugs/>.
> > Find the GDB manual and other documentation resources online at:
> > <http://www.gnu.org/software/gdb/documentation/>.
> > For help, type "help".
> > Type "apropos word" to search for commands related to "word"...
> > Reading symbols from /usr/bin/kdialog...(no debugging symbols
> > found)...done.
> > (gdb) run --msgbox hi
> > Starting program: /usr/bin/kdialog --msgbox hi
> > [Thread debugging using libthread_db enabled]
> > Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> > [New Thread 0x7f2e96ec8700 (LWP 166)]
> > [New Thread 0x7f2e8f5a9700 (LWP 167)]
> > ^Z
> > Thread 1 "kdialog" received signal SIGTSTP, Stopped (user).
> > pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/
> > pthread_cond_wait.S:185
> > 185 ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: No such
> > file or
> > directory.
> > (gdb) back
> > #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/
> > x86_64/
> > pthread_cond_wait.S:185
> > #1 0x00007f2ea54cf8eb in QWaitCondition::wait(QMutex*, unsigned long) ()
> > from
> > /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> > #2 0x00007f2ea8375e54 in ?? () from /usr/lib/x86_64-linux-gnu/
> > libQt5DBus.so.5
> > #3 0x00007f2ea8331aa1 in ?? () from /usr/lib/x86_64-linux-gnu/
> > libQt5DBus.so.5
> > #4 0x00007f2ea831e6cb in QDBusConnection::call(QDBusMessage const&,
> > QDBus::CallMode, int) const () from /usr/lib/x86_64-linux-gnu/
> > libQt5DBus.so.5
> > #5 0x00007f2ea833c862 in
> > QDBusAbstractInterface::callWithArgumentList(QDBus::CallMode, QString
> > const&,
> > QList<QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
> > #6 0x00007f2ea833d0e6 in QDBusAbstractInterface::call(QDBus::CallMode,
> > QString const&, QVariant const&, QVariant const&, QVariant const&,
> > QVariant
> > const&, QVariant const&, QVariant const&, QVariant const&, QVariant
> > const&) ()
> > from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
> > #7 0x00007f2ea833d2f1 in QDBusAbstractInterface::call(QString const&,
> > QVariant const&, QVariant const&, QVariant const&, QVariant const&,
> > QVariant
> > const&, QVariant const&, QVariant const&, QVariant const&) () from
> > /usr/lib/
> > x86_64-linux-gnu/libQt5DBus.so.5
> > #8 0x00007f2ea83230dc in QDBusConnectionInterface::startService(QString
> > const&) () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
> > #9 0x00007f2ea7d24f34 in ?? () from /usr/lib/x86_64-linux-gnu/
> > libKF5Notifications.so.5
> > #10 0x00007f2ea7d109d2 in ?? () from /usr/lib/x86_64-linux-gnu/
> > libKF5Notifications.so.5
> > #11 0x00007f2ea7d111f1 in ?? () from /usr/lib/x86_64-linux-gnu/
> > libKF5Notifications.so.5
> > #12 0x00007f2ea7d0efc5 in KNotification::sendEvent() () from
> > /usr/lib/x86_64-
> > linux-gnu/libKF5Notifications.so.5
> > #13 0x00007f2ea56cfc59 in QObject::event(QEvent*) () from /usr/lib/x86_64-
> > linux-gnu/libQt5Core.so.5
> > #14 0x00007f2ea64f83fc in QApplicationPrivate::notify_helper(QObject*,
> > QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> > #15 0x00007f2ea64ffe07 in QApplication::notify(QObject*, QEvent*) () from
> > /
> > usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> > #16 0x00007f2ea56a2798 in QCoreApplication::notifyInternal2(QObject*,
> > QEvent*)
> > () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> > #17 0x00007f2ea56a4f7b in QCoreApplicationPrivate::
> > sendPostedEvents(QObject*,
> > int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> > #18 0x00007f2ea56f8323 in ?? () from /usr/lib/x86_64-linux-gnu/
> > libQt5Core.so.5
> > #19 0x00007f2ea064e197 in g_main_context_dispatch () from
> > /lib/x86_64-linux-
> > gnu/libglib-2.0.so.0
> > #20 0x00007f2ea064e3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-
> > 2.0.so.0
> > #21 0x00007f2ea064e49c in g_main_context_iteration () from
> > /lib/x86_64-linux-
> > gnu/libglib-2.0.so.0
> > #22 0x00007f2ea56f792f in
> > QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
> > ()
> > from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> > #23 0x00007f2ea56a07ca in
> > QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/
> > x86_64-linux-gnu/libQt5Core.so.5
> > #24 0x00007f2ea6727aa7 in QDialog::exec() () from
> > /usr/lib/x86_64-linux-gnu/
> > libQt5Widgets.so.5
> > #25 0x00007f2ea6d04a8d in KMessageBox::createKMessageBox(QDialog*,
> > QDialogButtonBox*, QIcon const&, QString const&, QStringList const&,
> > QString
> > const&, bool*, QFlags<KMessageBox::Option>, QString const&,
> > QMessageBox::Icon)
> > () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
> > #26 0x00007f2ea6d05517 in KMessageBox::createKMessageBox(QDialog*,
> > QDialogButtonBox*, QMessageBox::Icon, QString const&, QStringList const&,
> > QString const&, bool*, QFlags<KMessageBox::Option>, QString const&) ()
> > from /
> > usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
> > #27 0x00007f2ea6d09070 in ?? () from /usr/lib/x86_64-linux-gnu/
> > libKF5WidgetsAddons.so.5
> > #28 0x00007f2ea6d095ef in ?? () from /usr/lib/x86_64-linux-gnu/
> > libKF5WidgetsAddons.so.5
> > #29 0x000000000040ca2c in ?? ()
> > #30 0x00007f2ea4cf4830 in __libc_start_main (main=0x409520, argc=3,
> > argv=0x7fffffffecc8, init=<optimized out>, fini=<optimized out>,
> > rtld_fini=<optimized out>, stack_end=0x7fffffffecb8)
> >
> > at ../csu/libc-start.c:291
> >
> > neon at be52b1fd30c6:~$ kdialog --msgbox 'wait for it'
> > method call time=1501231696.069342 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=1 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=Hello
> > method return time=1501231696.069357 sender=org.freedesktop.DBus ->
> > destination=:1.3 serial=1 reply_serial=1
> >
> > string ":1.3"
> >
> > signal time=1501231696.069368 sender=org.freedesktop.DBus ->
> > destination=(null
> > destination) serial=9 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=NameOwnerChanged
> >
> > string ":1.3"
> > string ""
> > string ":1.3"
> >
> > signal time=1501231696.069379 sender=org.freedesktop.DBus ->
> > destination=:1.3
> > serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus;
> > member=NameAcquired
> >
> > string ":1.3"
> >
> > method call time=1501231696.069658 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=2 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string "type='signal',path='/
> >
> > BreezeStyle',interface='org.kde.Breeze.Style',member='
> > reparseConfiguration'"
> > method call time=1501231696.069828 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=3 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string "type='signal',path='/
> >
> > BreezeDecoration',interface='org.kde.Breeze.Style',member='
> > reparseConfiguration'"
> > method call time=1501231696.072801 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=4 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string "type='signal',path='/
> >
> > KIconLoader',interface='org.kde.KIconLoader',member='iconChanged'"
> > method call time=1501231696.080759 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=5 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string
> >
> > "type='signal',sender='org.freedesktop.DBus',interface='
> > org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.
> > a11y.Bus',arg1=''"
> > method call time=1501231696.080887 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=6 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=NameHasOwner
> >
> > string "org.a11y.Bus"
> >
> > method return time=1501231696.080921 sender=org.freedesktop.DBus ->
> > destination=:1.3 serial=3 reply_serial=6
> >
> > boolean false
> >
> > method call time=1501231696.131050 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=7 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string "type='signal',path='/
> >
> > KDEPlatformTheme',interface='org.kde.KDEPlatformTheme',
> > member='refreshFonts'"
> > method call time=1501231696.131211 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=8 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string "type='signal',path='/
> >
> > KToolBar',interface='org.kde.KToolBar',member='styleChanged'"
> > method call time=1501231696.131225 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=9 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string "type='signal',path='/
> >
> > KGlobalSettings',interface='org.kde.KGlobalSettings',
> > member='notifyChange'"
> > method call time=1501231696.131523 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=10 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=NameHasOwner
> >
> > string "org.freedesktop.Notifications"
> >
> > method return time=1501231696.131636 sender=org.freedesktop.DBus ->
> > destination=:1.3 serial=4 reply_serial=10
> >
> > boolean false
> >
> > method call time=1501231696.131715 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=11 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string
> >
> > "type='signal',sender='org.freedesktop.DBus',interface='
> > org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.
> > freedesktop.Notifications'"
> > method call time=1501231696.131845 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=12 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=ListActivatableNames
> > method return time=1501231696.131855 sender=org.freedesktop.DBus ->
> > destination=:1.3 serial=5 reply_serial=12
> >
> > array [
> >
> > string "org.freedesktop.DBus"
> > string "org.freedesktop.Notifications"
> > string "org.kde.kpasswdserver"
> > string "org.kde.kded5"
> > string "org.kde.fontinst"
> > string "org.gnome.evolution.dataserver.AddressBook9"
> > string "org.gnome.GConf"
> > string "org.gnome.evolution.dataserver.Calendar7"
> > string "org.gnome.evolution.dataserver.Sources5"
> > string "org.freedesktop.systemd1"
> > string "org.a11y.Bus"
> > string "org.kde.kiod5"
> > string "org.kde.kglobalaccel"
> > string "org.kde.kuiserver"
> > string "org.freedesktop.FileManager1"
> > string "org.kde.Spectacle"
> > string "org.kde.kwalletd5"
> > string "org.freedesktop.ColorHelper"
> > string "org.kde.kdeconnect"
> > string "org.kde.KScreen"
> > string "org.kde.kwalletd"
> > string "org.gtk.GLib.PACRunner"
> > string "org.kde.kcookiejar5"
> > string "org.kde.kssld5"
> > string "org.kde.kioexecd"
> > string "ca.desrt.dconf"
> > string "org.bluez.obex"
> > string "org.gnome.evolution.dataserver.UserPrompter0"
> > string "org.kde.krunner"
> >
> > ]
> >
> > method call time=1501231696.132133 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=13 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=StartServiceByName
> >
> > string "org.freedesktop.Notifications"
> > uint32 0
> >
> > HANGING
> >
> > method call time=1501231708.246641 sender=:1.2 ->
> > destination=org.freedesktop.DBus serial=4 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string
> >
> > "type='signal',sender='org.freedesktop.DBus',interface='
> > org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.
> > freedesktop.Notifications',arg1=''"
> > method call time=1501231708.246880 sender=:1.2 ->
> > destination=org.freedesktop.DBus serial=5 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string
> >
> > "type='signal',sender='org.freedesktop.DBus',interface='
> > org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.
> > freedesktop.DBus'"
> > error time=1501231708.246902 sender=org.freedesktop.DBus ->
> > destination=:1.2
> > error_name=org.freedesktop.DBus.Error.MatchRuleNotFound reply_serial=5
> >
> > string "The given match rule wasn't found and can't be removed"
> >
> > signal time=1501231708.246911 sender=org.freedesktop.DBus ->
> > destination=:1.2
> > serial=10 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus;
> > member=NameLost
> >
> > string ":1.2"
> >
> > signal time=1501231708.246920 sender=org.freedesktop.DBus ->
> > destination=(null
> > destination) serial=11 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=NameOwnerChanged
> >
> > string ":1.2"
> > string ":1.2"
> > string ""
> >
> > error time=1501231708.248030 sender=org.freedesktop.DBus ->
> > destination=:1.3
> > error_name=org.freedesktop.DBus.Error.Spawn.ChildExited reply_serial=13
> >
> > string "Process org.freedesktop.Notifications exited with status 1"
> >
> > method call time=1501231708.248344 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=14 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string "type='signal',path='/
> >
> > Config',interface='org.kde.knotification',member='reparseConfiguration'"
> > method call time=1501231708.248979 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=15 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=AddMatch
> >
> > string
> >
> > "type='signal',interface='org.kde.Phonon.Factory',member='
> > phononBackendChanged'"
> > signal time=1501231708.249916 sender=:1.3 -> destination=(null
> > destination)
> > serial=16 path=/AudioOutputs/0; interface=org.kde.Phonon.AudioOutput;
> > member=newOutputAvailable
> >
> > string ":1.3"
> > string "/AudioOutputs/0"
> >
> > [00000000012792c8] pulse audio output error: PulseAudio server connection
> > failure: Connection refused
> > [000000000127bd28] pulse audio output error: PulseAudio server connection
> > failure: Connection refused
> > [000000000127bd28] core audio output error: no suitable audio output
> > module
> > signal time=1501231708.348299 sender=:1.3 -> destination=(null
> > destination)
> > serial=17 path=/AudioOutputs/0; interface=org.kde.Phonon.AudioOutput;
> > member=volumeChanged
> >
> > double -nan
> >
> > signal time=1501231708.348332 sender=:1.3 -> destination=(null
> > destination)
> > serial=18 path=/AudioOutputs/0; interface=org.kde.Phonon.AudioOutput;
> > member=volumeChanged
> >
> > double -nan
> >
> > [00007f027801e178] pulse audio output error: PulseAudio server connection
> > failure: Connection refused
> > [00007f027801e178] core audio output error: no suitable audio output
> > module
> > [00007f02800247a8] core decoder error: failed to create audio output
> > method call time=1501231724.463927 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=19 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string
> >
> > "type='signal',interface='org.kde.Phonon.Factory',member='
> > phononBackendChanged'"
> > method call time=1501231724.464062 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=20 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string "type='signal',path='/
> >
> > BreezeDecoration',interface='org.kde.Breeze.Style',member='
> > reparseConfiguration'"
> > method call time=1501231724.464085 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=21 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string "type='signal',path='/
> >
> > BreezeStyle',interface='org.kde.Breeze.Style',member='
> > reparseConfiguration'"
> > method call time=1501231724.464740 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=22 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string "type='signal',path='/
> >
> > KDEPlatformTheme',interface='org.kde.KDEPlatformTheme',
> > member='refreshFonts'"
> > method call time=1501231724.464931 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=23 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string "type='signal',path='/
> >
> > KToolBar',interface='org.kde.KToolBar',member='styleChanged'"
> > method call time=1501231724.464943 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=24 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string "type='signal',path='/
> >
> > KGlobalSettings',interface='org.kde.KGlobalSettings',
> > member='notifyChange'"
> > method call time=1501231724.481407 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=25 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string
> >
> > "type='signal',sender='org.freedesktop.DBus',interface='
> > org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.
> > a11y.Bus',arg1=''"
> > method call time=1501231724.481456 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=26 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string
> >
> > "type='signal',sender='org.freedesktop.DBus',interface='
> > org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.
> > freedesktop.DBus'"
> > error time=1501231724.481473 sender=org.freedesktop.DBus ->
> > destination=:1.3
> > error_name=org.freedesktop.DBus.Error.MatchRuleNotFound reply_serial=26
> >
> > string "The given match rule wasn't found and can't be removed"
> >
> > method call time=1501231724.481734 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=27 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string "type='signal',path='/
> >
> > Config',interface='org.kde.knotification',member='reparseConfiguration'"
> > method call time=1501231724.481907 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=28 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string
> >
> > "type='signal',sender='org.freedesktop.DBus',interface='
> > org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.
> > freedesktop.Notifications'"
> > signal time=1501231724.482106 sender=:1.3 -> destination=(null
> > destination)
> > serial=29 path=/AudioOutputs/0; interface=org.kde.Phonon.AudioOutput;
> > member=outputDestroyed
> > method call time=1501231724.483055 sender=:1.3 ->
> > destination=org.freedesktop.DBus serial=30 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=RemoveMatch
> >
> > string "type='signal',path='/
> >
> > KIconLoader',interface='org.kde.KIconLoader',member='iconChanged'"
> > signal time=1501231724.483516 sender=org.freedesktop.DBus ->
> > destination=:1.3
> > serial=12 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus;
> > member=NameLost
> >
> > string ":1.3"
> >
> > signal time=1501231724.483586 sender=org.freedesktop.DBus ->
> > destination=(null
> > destination) serial=13 path=/org/freedesktop/DBus;
> > interface=org.freedesktop.DBus; member=NameOwnerChanged
> >
> > string ":1.3"
> > string ":1.3"
> > string ""
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