Bug#928662: Additional gnome-shell related errors and/or log flooding

Tue May 14 11:14:15 BST 2019

Dear maintainers,

Some more log floodings and gnome-shell boot up and
session login/out related.

I post both in this thread, simply because I have no idea
about those relationships.

Allow me to use logcheck summary
because my syslog is growing rapidly.

Log floodings and Xwayland error
================================

1. Some time-delta resemble, with additional warning.
-------------------------------------------------------

org.gnome.Shell.desktop[PID]: Window manager warning:
   last_user_time (15040878) is greater than
   comparison timestamp (15040877).
   This most likely represents a buggy client
   sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW.
   Trying to work around...
org.gnome.Shell.desktop[PID]: Window manager warning:
   0x1e001c4 (Write: [Pr) appears to be one of the offending windows
   with a timestamp of 15040878.  Working around...

hex code and timestamps are real. same PID.

2. JSAPI related flooding and Xwayland error
---------------------------------------------

gnome-shell[PID]: Attempting to call back into JSAPI
   during the sweeping phase of GC.
   This is most likely caused by not destroying a Clutter actor
   or Gtk+ widget with ::destroy signals connected,
   but can also be caused by using the destroy(), dispose(),
   or remove() vfuncs. Because it would crash the application,
   it has been blocked and the JS callback not invoked.
gnome-shell[PID]: The offending signal was destroy
   on StBin 0x55952e96add0.
org.gnome.Shell.desktop[PID]:
   == Stack trace for context 0x55952cd712b0 ==
org.gnome.Shell.desktop[PID]:
   == Stack trace for context 0x55952cd712b0 ==
org.gnome.Shell.desktop[PID]:
   == Stack trace for context 0x55952cd712b0 ==
...
gnome-shell[PID]: The offending signal was destroy
   on StBin 0x55952d06a860.
org.gnome.Shell.desktop[PID]:
   == Stack trace for context 0x55952cd712b0 ==
org.gnome.Shell.desktop[PID]:
   == Stack trace for context 0x55952cd712b0 ==
....
gnome-shell[PID]: Attempting to call back into JSAPI
   during the sweeping phase of GC.
   This is most likely caused by not destroying a Clutter actor
   or Gtk+ widget with ::destroy signals connected,
   but can also be caused by using the destroy(), dispose(),
   or remove() vfuncs. Because it would crash the application,
   it has been blocked and the JS callback not invoked.
gnome-shell[PID]: The offending signal was actor-removed on
   ShellGenericContainer 0x55952f46a050.
...

Same PID, real hex numbers, in a sec.

After loging prosess, in 15~20 sec, it follows,

gnome-shell[PID]: The offending signal was destroy
   on StBin 0x55952ccd4f40.
systemd-logind[PID2]: New session c2 of user Debian-gdm.
systemd: pam_unix(systemd-user:session): session opened
   for user Debian-gdm by (uid=0) 

systemd[1]: Created slice User Slice of UID 116.
systemd[PID3]: Listening on GnuPG cryptographic agent and passphrase 
cache (access for web browsers).
gnome-session[PID3]: gnome-session-binary[PID3]:
   WARNING: Could not parse desktop file orca-autostart.desktop or
            it references a not found TryExec binary 

gnome-session-binary[PID3]:
   WARNING: Could not parse desktop file orca-autostart.desktop or
            it references a not found TryExec binary 

org.gnome.Shell.desktop[PID4]: can't load
   /usr/lib/x86_64-linux-gnu/spa/support/libspa-support.so:
   /usr/lib/x86_64-linux-gnu/spa/support/libspa-support.so:
     cannot open shared object file:  No such file or directory
polkitd(authority=local): Registered Authentication Agent for
   unix-session:c2 (system bus name :1.466 [/usr/bin/gnome-shell],
   object path /org/freedesktop/PolicyKit1/AuthenticationAgent,
   locale en_US.UTF-8)
gnome-shell[PID4]: g_dir_open_with_errno:
   assertion 'path != NULL' failed
gnome-shell[PID4]: g_filename_to_utf8:
   assertion 'opsysstring != NULL' failed
gnome-shell[PID4]: g_dir_open_with_errno:
   assertion 'path != NULL' failed
gnome-shell[PID4]: g_filename_to_utf8:
   assertion 'opsysstring != NULL' failed
gnome-shell[PID4]: Error looking up permission:
   GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown:
     The name org.freedesktop.impl.portal.PermissionStore
     was not provided by any .service files
gnome-shell[PID]: GDBus.Error:
   org.freedesktop.DBus.Error.ServiceUnknown:
     The name org.freedesktop.GeoClue2 was not provided by
     any .service files
gnome-shell[PID4]: JS WARNING:
   [resource:///org/gnome/shell/ui/windowManager.js 1574]:
   reference to undefined property "MetaWindowXwayland"

logout the session,

systemd-logind[PID5]: Session c2 logged out.
   Waiting for processes to exit.
polkitd(authority=local): Unregistered Authentication Agent
   for unix-session:c2 (system bus name :1.466, object path
   /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8)
     (disconnected from bus)
at-spi-bus-launcher[PID6]: XIO:  fatal IO error 11
   (Resource temporarily unavailable) on X server ":1024"
at-spi-bus-launcher[PID6]:       after 21 requests
   (21 known processed) with 0 events remaining.
gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.A11ySettings.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.A11ySettings.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Clipboard.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Datetime.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Housekeeping.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Keyboard.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.MediaKeys.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Mouse.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Power.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING:
   Application 'org.gnome.SettingsDaemon.PrintNotifications.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Rfkill.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING:
   Application 'org.gnome.SettingsDaemon.ScreensaverProxy.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Sharing.desktop'
   killed by signal 15
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Smartcard.desktop'
   killed by signal 15
gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Clipboard.desktop'
   killed by signal 15
gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Datetime.desktop'
   killed by signal 15
gnome-session-binary[PID7]:
   WARNING: Application 'org.gnome.SettingsDaemon.Housekeeping.desktop'
   killed by signal 15
gnome-shell[28247]: Connection to xwayland lost

(same "killed by signal 15") ...

gnome-session-binary[PID7]:
   Unrecoverable failure in required componen org.gnome.Shell.desktop
gnome-session[PID7]: gnome-session-binary[PID7]:
   WARNING: App 'org.gnome.Shell.desktop' exited with code 1
gnome-session-binary[PID7]:
   WARNING: App 'org.gnome.Shell.desktop' exited with code 1

These summary logcheck mail are always posted
when I shutdown the box and boot it up again.

As far as I know, 100% reproduction, without specific malfunctions
at a glance; Terminal with byobu, mutt, Firefox, Thunderbird, etc.

Regards.