Error message "JS ERROR: Exception in callback for signal: activate"

[Mikhail]

I have the following message in syslog a few times per hour, scenario is unknown.
Ubuntu was installed from distributive (USB flash). The gnome package was not installed manually then, all this configuration is automatic.
I do not observe other problems or misbehavior on my system.

Feb 6 10:48:20 mike-MS gnome-shell[1411]: JS ERROR: Exception in callback for signal: activate: Error: Error invoking IBus.set_global_engine_async: Expected function for callback argument callback, got undefined#012setEngine@resource:///org/gnome/shell/misc/ibusManager.js:207:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012activateInputSource@resource:///org/gnome/shell/ui/status/keyboard.js:490:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012activate@resource:///org/gnome/shell/ui/status/keyboard.js:65:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_inputSourcesChanged@resource:///org/gnome/shell/ui/status/keyboard.js:620:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012reload@resource:///org/gnome/shell/ui/status/keyboard.js:369:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_ibusSetContentType@resource:///org/gnome/shell/ui/status/keyboard.js:691:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012_setContentType@resource:///org/gnome/shell/misc/ibusManager.js:183:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22

mike@mike-MS:~$ sudo lsb_release -rd
[sudo] password for mike:
Description: Ubuntu 18.04.1 LTS
Release: 18.04

mike@mike-MS:~$ uname -a
Linux mike-MS 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
mike@mike-MS:~$

mike@mike-MS:~$ sudo apt-cache show gnome
Package: gnome
Architecture: amd64
Version: 1:3.22+9
Priority: optional
Section: universe/gnome
Source: meta-gnome3
Origin: Ubuntu
Maintainer: Ubuntu Developers <email address hidden>
Original-Maintainer: Debian GNOME Maintainers <email address hidden>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 33
Depends: gnome-core (= 1:3.22+9), desktop-base, network-manager-gnome (>= 1.4), libproxy1-plugin-networkmanager, cheese (>= 3.22), evolution (>= 3.22), evolution-plugins (>= 3.22), file-roller (>= 3.22), gnome-calendar (>= 3.22), gnome-clocks (>= 3.22), gnome-color-manager (>= 3.22), gnome-documents (>= 3.22), gnome-getting-started-docs (>= 3.22), gnome-maps (>= 3.22), gnome-music (>= 3.22), gnome-todo (>= 3.22), shotwell | gnome-photos (>= 3.22), gnome-screenshot (>= 3.22), gnome-sound-recorder, gnome-tweaks (>= 3.22), gnome-weather (>= 3.20), nautilus-sendto (>= 3.8), orca (>= 3.22), rygel-playbin (>= 0.24), rygel-tracker (>= 0.24), seahorse (>= 3.20), simple-scan, vinagre (>= 3.22), avahi-daemon, gimp (>= 2.8), inkscape (>= 0.48), libreoffice-gnome, libreoffice-writer, libreoffice-calc, libreoffice-impress, libgsf-bin, rhythmbox (>= 3.0), vino (>= 3.22), xdg-user-dirs-gtk, cups-pk-helper (>= 0.2), gedit-plugins (>= 3.22), gstreamer1.0-libav (>= 1.10), gstreamer1.0-plugins-ugly (>= 1.10), rhythmbox-plugins, rhythmbox-plugin-cdrecorder, totem-plugins, libgtk2-perl (>= 1:1.130)
Recommends: nautilus-extension-brasero, fonts-noto-color-emoji, gnome-games, transmission-gtk
Suggests: alacarte, empathy, goobox | sound-juicer, polari, xul-ext-ublock-origin, firefox-esr-l10n-all | firefox-l10n-all
Filename: pool/universe/m/meta-gnome3/gnome_3.22+9_amd64.deb
Size: 2868
MD5sum: 1417e12735c09b030f94165f0a41a677
SHA1: 26aa4f56f30ffd345b321e84f1bf7ca56ca45f78
SHA256: 397a23bcb480070f5da53e3c87e83011ee9ce5e95b7a527b3ed9db15e9e6707e
Description-en: Full GNOME Desktop Environment, with extra components
 This is the GNOME Desktop environment, an intuitive and attractive
 desktop, with extra components.
 .
 This metapackage depends on the standard distribution of the GNOME
 desktop environment, plus a complete range of plugins and other
 applications integrating with GNOME and Debian, providing the best
 possible environment to date.
Description-md5: 984c5028c0ccad6f8854b311229d0985

mike@mike-MS:~$

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome (not installed)
ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18
Uname: Linux 4.15.0-45-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 6 11:03:40 2019
InstallationDate: Installed on 2019-01-26 (10 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: meta-gnome3
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Hans Deragon (deragon)]

I have the exact same problem. Perform a diff between my error message and the original from the author of this bug report and you will find no difference.

Feb 13 02:57:12 demloka gnome-shell[2452]: JS ERROR: Exception in callback for signal: activate: Error: Error invoking IBus.set_global_engine_async: Expected function for callback argument callback, got undefined#012setEngine@resource:///org/gnome/shell/misc/ibusManager.js:207:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012activateInputSource@resource:///org/gnome/shell/ui/status/keyboard.js:490:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012activate@resource:///org/gnome/shell/ui/status/keyboard.js:65:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_inputSourcesChanged@resource:///org/gnome/shell/ui/status/keyboard.js:620:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012reload@resource:///org/gnome/shell/ui/status/keyboard.js:369:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_ibusSetContentType@resource:///org/gnome/shell/ui/status/keyboard.js:691:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012_setContentType@resource:///org/gnome/shell/misc/ibusManager.js:183:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22

[SEMMER SULTAN (ssultan)]

I have same issue, when I open my laptop from suspend or hibernate state: no Network-manager running and can see below error:

JS ERROR: Exception in callback for signal: activate: Error: Error invoking IBus.set_global_engine_async: Expected function for callback argument callback, got undefined#012setEngine@resource:///org/gnome/shell/misc/ibusManager.js:212:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012activateInputSource@resource:///org/gnome/shell/ui/status/keyboard.js:490:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012activate@resource:///org/gnome/shell/ui/status/keyboard.js:65:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_inputSourcesChanged@resource:///org/gnome/shell/ui/status/keyboard.js:620:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012reload@resource:///org/gnome/shell/ui/status/keyboard.js:369:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_ibusSetContentType@resource:///org/gnome/shell/ui/status/keyboard.js:691:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012_setContentType@resource:///org/gnome/shell/misc/ibusManager.js:188:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
Mar 15 09:27:36 ssultan1-Surface-Pro google-chrome.desktop[2104]: [2104:2629:0315/092736.938534:ERROR:get_updates_processor.cc(244)] PostClientToServerMessage() failed during GetUpdates
Mar 15 09:28:02 ssultan1-Surface-Pro dbus-daemon[662]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' requested by ':1.305' (uid=1000 pid=1728 comm="/usr/bin/gnome-shell ")
Mar 15 09:28:02 ssultan1-Surface-Pro systemd[1]: Starting Fingerprint Authentication Daemon...
Mar 15 09:28:02 ssultan1-Surface-Pro dbus-daemon[662]: [system] Successfully activated service 'net.reactivated.Fprint'
Mar 15 09:28:02 ssultan1-Surface-Pro systemd[1]: Started Fingerprint Authentication Daemon.
Mar 15 09:28:33 ssultan1-Surface-Pro snapd[705]: udevmon.go:190: udev monitor observed remove event for unknown device "/sys/cred_jar(1773:fprintd.service)"
Mar 15 09:28:45 ssultan1-Surface-Pro kernel: [84503.020873] logitech-hidpp-device 0003:046D:4051.0011: HID++ 4.5 device connected.