(unity-panel-service:1654): GLib-GObject-WARNING **: g_object_weak_unref: couldn't find weak ref 0x7f5f5cd040b0(0x114d070)

[Haw Loeung]

Hi,

I'm seeing this warning in ~/.cache/upstart/unity-panel-service.log every now and again:

(unity-panel-service:1654): IDO-WARNING **: Can't load user avatar icon: Error opening file: No such file or directory
(unity-panel-service:1654): GLib-GObject-WARNING **: g_object_weak_unref: couldn't find weak ref 0x7f5f5cd040b0(0x114d070)
(unity-panel-service:1654): GLib-GObject-WARNING **: g_object_weak_unref: couldn't find weak ref 0x7f5f5cd040b0(0x114d070)
(unity-panel-service:1654): IDO-WARNING **: Can't load user avatar icon: Error opening file: No such file or directory
(unity-panel-service:1654): GLib-GObject-WARNING **: g_object_weak_unref: couldn't find weak ref 0x7f5f5cd040b0(0x114d070)

Any chance someone could take a look into this?

Thanks,

Haw

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: unity-services 7.1.2+13.10.20131011-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Fri Oct 11 23:49:46 2013
GconfCompiz:

MarkForUpload: True
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Haw Loeung (hloeung)]

Not sure if the attached backtrace helps.

(unity-panel-service:4787): GLib-GObject-WARNING **: g_object_weak_unref: couldn't find weak ref 0x7ffe37df60b0(0x119d070)
^C
(unity-panel-service:4787): IDO-WARNING **: Can't load user avatar icon: Error opening file: No such file or directory

(gdb) thread apply all backtrace

Thread 3 (Thread 0x7ffe3d661700 (LWP 4788)):
#0 0x00007ffe44bc347d in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007ffe4598f694 in g_main_context_poll (priority=2147483647, n_fds=3, fds=0x7ffe380010e0, timeout=-1, context=0x103e8a0) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:4006
#2 g_main_context_iterate (context=0x103e8a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3707
#3 0x00007ffe4598fafa in g_main_loop_run (loop=0x103e830) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3906
#4 0x00007ffe461849d6 in gdbus_shared_thread_func (user_data=0x103e870) at /build/buildd/glib2.0-2.38.0/./gio/gdbusprivate.c:278
#5 0x00007ffe459b40e5 in g_thread_proxy (data=0x10278f0) at /build/buildd/glib2.0-2.38.0/./glib/gthread.c:798
#6 0x00007ffe44ea4f6e in start_thread (arg=0x7ffe3d661700) at pthread_create.c:311
#7 0x00007ffe44bcfecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7ffe3ca4f700 (LWP 4789)):
#0 0x00007ffe44bc347d in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007ffe4598f694 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7ffe300010c0, timeout=-1, context=0x1082400) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:4006
#2 g_main_context_iterate (context=context@entry=0x1082400, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3707
#3 0x00007ffe4598f79c in g_main_context_iteration (context=0x1082400, may_block=1) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3773
#4 0x00007ffe3ca56a9d in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#5 0x00007ffe459b40e5 in g_thread_proxy (data=0x118bb20) at /build/buildd/glib2.0-2.38.0/./glib/gthread.c:798
#6 0x00007ffe44ea4f6e in start_thread (arg=0x7ffe3ca4f700) at pthread_create.c:311
#7 0x00007ffe44bcfecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7ffe47b2d980 (LWP 4787)):
#0 0x00007ffe44bc347d in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007ffe4598f694 in g_main_context_poll (priority=2147483647, n_fds=3, fds=0x11980d0, timeout=28477, context=0x104bde0) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:4006
#2 g_main_context_iterate (context=0x104bde0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3707
#3 0x00007ffe4598fafa in g_main_loop_run (loop=0x11980b0) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3906
#4 0x00007ffe46a5e455 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#5 0x0000000000404e57 in main (argc=1, argv=0x7ffff8f0bb98) at /build/buildd/unity-7.1.2+13.10.20131011/services/panel-main.c:418
(gdb) quit
A debugging session is active.

        Inferior 1 [process 4787] will be detached.

Quit ...

[Stephen M. Webb (bregma)]

Some indicator somewhere is doing something not quite right. It's not possible to tell which indicator, and since the warning occurs when trying to unref something that no longer exists, it's likely fairly harmless. Nevertheless, we'll keep an eye on this.

[Haw Loeung (hloeung)]

That warning always seems to happen when closing windows - be it terminal (Konsole), Chrome, gnome-calculator, etc. so maybe it's indicator-application-service?

[Tony Houghton (h-realh)]

I get this from some applications in Debian and gnome-shell. I assumed it was an upstream GTK3 bug, but comment #4 says Chrome does it too, so perhaps it's glib.

In any case I don't think the fault is with unity-panel-service or even specific to Ubuntu.