dbus-monitor

signal time=1574972670.810419 sender=org.freedesktop.DBus -> destination=:1.52 serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameAcquired
   string ":1.52"
signal time=1574972670.810431 sender=org.freedesktop.DBus -> destination=:1.52 serial=4 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameLost
   string ":1.52"
method call time=1574972676.670415 sender=:1.11 -> destination=:1.14 serial=138 path=/org/freedesktop/portal/desktop; interface=org.freedesktop.impl.portal.Background; member=GetAppState
error time=1574972676.670641 sender=:1.14 -> destination=:1.11 error_name=org.freedesktop.portal.Error.Failed reply_serial=138
   string "Could not get window list: Cannot invoke method; proxy is for the well-known name org.gnome.Shell without an owner, and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag"
method call time=1574972691.745825 sender=:1.53 -> destination=org.freedesktop.DBus serial=1 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=Hello
method return time=1574972691.745834 sender=org.freedesktop.DBus -> destination=:1.53 serial=1 reply_serial=1
   string ":1.53"
signal time=1574972691.745854 sender=org.freedesktop.DBus -> destination=(null destination) serial=43 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged
   string ":1.53"
   string ""
   string ":1.53"
signal time=1574972691.745890 sender=org.freedesktop.DBus -> destination=:1.53 serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameAcquired
   string ":1.53"
method call time=1574972691.746025 sender=:1.53 -> destination=org.freedesktop.DBus serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "type='signal',sender='org.freedesktop.Notifications',interface='org.freedesktop.Notifications',path='/org/freedesktop/Notifications'"
method return time=1574972691.746034 sender=org.freedesktop.DBus -> destination=:1.53 serial=3 reply_serial=2
method call time=1574972691.746038 sender=:1.53 -> destination=org.freedesktop.DBus serial=3 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',path='/org/freedesktop/DBus',arg0='org.freedesktop.Notifications'"
method return time=1574972691.746046 sender=org.freedesktop.DBus -> destination=:1.53 serial=4 reply_serial=3
method call time=1574972691.746061 sender=:1.53 -> destination=org.freedesktop.DBus serial=4 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=StartServiceByName
   string "org.freedesktop.Notifications"
   uint32 0
method return time=1574972691.746069 sender=org.freedesktop.DBus -> destination=:1.53 serial=5 reply_serial=4
   uint32 2
method call time=1574972691.746135 sender=:1.53 -> destination=org.freedesktop.DBus serial=5 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=GetNameOwner
   string "org.freedesktop.Notifications"
method return time=1574972691.746141 sender=org.freedesktop.DBus -> destination=:1.53 serial=6 reply_serial=5
   string ":1.16"
method call time=1574972691.746234 sender=:1.53 -> destination=:1.16 serial=6 path=/org/freedesktop/Notifications; interface=org.freedesktop.Notifications; member=GetServerInformation
method return time=1574972691.746310 sender=:1.16 -> destination=:1.53 serial=5 reply_serial=6
   string "dunst"
   string "knopwob"
   string "1.4.1"
   string "1.2"
method call time=1574972691.746427 sender=:1.53 -> destination=:1.16 serial=7 path=/org/freedesktop/Notifications; interface=org.freedesktop.Notifications; member=Notify
   string "notify-send"
   uint32 0
   string ""
   string "Call me Ishmael"
   string ""
   array [
   ]
   array [
      dict entry(
         string "urgency"
         variant             byte 1
      )
   ]
   int32 -1
method return time=1574972691.753358 sender=:1.16 -> destination=:1.53 serial=6 reply_serial=7
   uint32 2
signal time=1574972691.753766 sender=org.freedesktop.DBus -> destination=:1.53 serial=5 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameLost
   string ":1.53"
signal time=1574972691.753777 sender=org.freedesktop.DBus -> destination=(null destination) serial=44 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged
   string ":1.53"
   string ":1.53"
   string ""
signal time=1574972697.759645 sender=:1.16 -> destination=:1.53 serial=7 path=/org/freedesktop/Notifications; interface=org.freedesktop.Notifications; member=NotificationClosed
   uint32 2
   uint32 1
error time=1574972697.759660 sender=org.freedesktop.DBus -> destination=:1.16 error_name=org.freedesktop.DBus.Error.ServiceUnknown reply_serial=7
   string "The name :1.53 was not provided by any .service files"