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[Bug 1530872] Re: Unity icons stops responding

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Darryl Champagne <dgc@xxxxxxx>
Date: Mon, 25 Jan 2016 14:26:02 -0000
Reply-to: Bug 1530872 <1530872@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
The issue has reoccurred after the BIOS Update. Circumstances were similar, two logins, switching between them.  The only other things occurring at the time was plugging in a USB Stick, and using the screen app (screen -R -D, to check on minecraft servers that were running).  I believe I was logged into the 2nd account, but the USB stick auto-mounted under the first account (the one I had logged into first).
Still no direct way to reproduce.

** Changed in: xorg (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/1530872

Title:
  Unity icons stops responding

Status in xorg package in Ubuntu:
  New

Bug description:
  Occasionally, not currently reproducible, I am unable to select any of
  the icons in the left, or top menus.  The last time occurred after
  switching users.  The only way I have been able to recover is to open
  a terminal, and run unity.  The last time I had to do so twice before
  anything worked - the first time left me with no working window
  manager at all.  The only mouse interactions that work are to pick a
  window, and the right click menu over the desktop or open window. I'm
  not sure if the appropriate package is xorg or something unity
  specific.

  The following shows me opening gedit (to find the command to reset), followed by running unity twice (the first time failing).
  darryl@Server:~$ gedit &
  [1] 13436
  darryl@Server:~$ unity
  unity-panel-service stop/waiting
  compiz (core) - Info: Loading plugin: core
  compiz (core) - Info: Starting plugin: core
  unity-panel-service start/running, process 13883
  compiz (core) - Info: Loading plugin: ccp
  compiz (core) - Info: Starting plugin: ccp
  compizconfig - Info: Backend     : gsettings
  compizconfig - Info: Integration : true
  compizconfig - Info: Profile     : unity
  compiz (core) - Info: Loading plugin: composite
  compiz (core) - Info: Starting plugin: composite
  compiz (core) - Info: Loading plugin: opengl
  compiz (core) - Info: Unity is fully supported by your hardware.
  compiz (core) - Info: Unity is fully supported by your hardware.
  compiz (core) - Info: Starting plugin: opengl
  compiz (core) - Info: Loading plugin: commands
  compiz (core) - Info: Starting plugin: commands
  compiz (core) - Info: Loading plugin: mousepoll
  compiz (core) - Info: Starting plugin: mousepoll
  compiz (core) - Info: Loading plugin: imgpng
  compiz (core) - Info: Starting plugin: imgpng
  compiz (core) - Info: Loading plugin: snap
  compiz (core) - Info: Starting plugin: snap
  compiz (core) - Info: Loading plugin: grid
  compiz (core) - Info: Starting plugin: grid
  compiz (core) - Info: Loading plugin: vpswitch
  compiz (core) - Info: Starting plugin: vpswitch
  compiz (core) - Info: Loading plugin: compiztoolbox
  compiz (core) - Info: Starting plugin: compiztoolbox
  compiz (core) - Info: Loading plugin: move
  compiz (core) - Info: Starting plugin: move
  compiz (core) - Info: Loading plugin: wall
  compiz (core) - Info: Starting plugin: wall
  compiz (core) - Info: Loading plugin: place
  compiz (core) - Info: Starting plugin: place
  compiz (core) - Info: Loading plugin: regex
  compiz (core) - Info: Starting plugin: regex
  compiz (core) - Info: Loading plugin: copytex
  compiz (core) - Info: Starting plugin: copytex
  compiz (core) - Info: Loading plugin: animation
  compiz (core) - Info: Starting plugin: animation
  compiz (core) - Info: Loading plugin: workarounds
  compiz (core) - Info: Starting plugin: workarounds
  compiz (core) - Info: Loading plugin: expo
  compiz (core) - Info: Starting plugin: expo
  compiz (core) - Info: Loading plugin: resize
  compiz (core) - Info: Starting plugin: resize
  compiz (core) - Info: Loading plugin: ezoom
  compiz (core) - Info: Starting plugin: ezoom
  compiz (core) - Info: Loading plugin: fade
  compiz (core) - Info: Starting plugin: fade
  compiz (core) - Info: Loading plugin: unitymtgrabhandles
  compiz (core) - Info: Starting plugin: unitymtgrabhandles
  compiz (core) - Info: Loading plugin: session
  compiz (core) - Info: Starting plugin: session
  compiz (core) - Info: Loading plugin: scale
  compiz (core) - Info: Starting plugin: scale
  compiz (core) - Info: Loading plugin: unityshell
  compiz (core) - Info: Starting plugin: unityshell
  WARN  2016-01-04 08:37:56 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.Shell' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:37:56 unity.debug.interface DebugDBusInterface.cpp:217 Unable to load entry point in libxpathselect: libxpathselect.so.1.4: cannot open shared object file: No such file or directory -- full D-Bus introspection will not be available
  WARN  2016-01-04 08:37:56 xim.controller XIMController.cpp:103 IBus natively supported.
  WARN  2016-01-04 08:37:56 unity.dash.gsettingsscopereader GSettingsScopes.cpp:108 Error fetching protocol metadata for scope: social.scope : Valid key file could not be found in search dirs
  WARN  2016-01-04 08:37:56 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Launcher' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:37:56 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Dash' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:37:56 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.SessionManager.EndSessionDialog' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:37:56 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Session' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:37:56 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.ScreenSaver' yet as we don't have a connection, waiting for it...
  compiz (core) - Info: Stopping plugin: unityshell
  ERROR 2016-01-04 08:37:56 unity.shell.compiz unityshell.cpp:3937 Impossible to delete the unity locked stamp file

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal:
  assertion 'hash_table != NULL' failed

  (compiz:13881): GLib-CRITICAL **: g_hash_table_remove_internal: assertion 'hash_table != NULL' failed
  compiz (core) - Info: Unloading plugin: unityshell
  compiz (core) - Info: Stopping plugin: scale
  compiz (core) - Info: Unloading plugin: scale
  compiz (core) - Info: Stopping plugin: session
  compiz (core) - Info: Unloading plugin: session
  compiz (core) - Info: Stopping plugin: unitymtgrabhandles
  compiz (core) - Info: Unloading plugin: unitymtgrabhandles
  compiz (core) - Info: Stopping plugin: fade
  compiz (core) - Info: Unloading plugin: fade
  compiz (core) - Info: Stopping plugin: ezoom
  compiz (core) - Info: Unloading plugin: ezoom
  compiz (core) - Info: Stopping plugin: resize
  compiz (core) - Info: Unloading plugin: resize
  compiz (core) - Info: Stopping plugin: expo
  compiz (core) - Info: Unloading plugin: expo
  compiz (core) - Info: Stopping plugin: workarounds
  compiz (core) - Info: Unloading plugin: workarounds
  compiz (core) - Info: Stopping plugin: animation
  compiz (core) - Info: Unloading plugin: animation
  compiz (core) - Info: Stopping plugin: copytex
  compiz (core) - Info: Unloading plugin: copytex
  compiz (core) - Info: Stopping plugin: regex
  compiz (core) - Info: Unloading plugin: regex
  compiz (core) - Info: Stopping plugin: place
  compiz (core) - Info: Unloading plugin: place
  compiz (core) - Info: Stopping plugin: wall
  compiz (core) - Info: Unloading plugin: wall
  compiz (core) - Info: Stopping plugin: move
  compiz (core) - Info: Unloading plugin: move
  compiz (core) - Info: Stopping plugin: compiztoolbox
  compiz (core) - Info: Unloading plugin: compiztoolbox
  compiz (core) - Info: Stopping plugin: vpswitch
  compiz (core) - Info: Unloading plugin: vpswitch
  compiz (core) - Info: Stopping plugin: grid
  compiz (core) - Info: Unloading plugin: grid
  compiz (core) - Info: Stopping plugin: snap
  compiz (core) - Info: Unloading plugin: snap
  compiz (core) - Info: Stopping plugin: imgpng
  compiz (core) - Info: Unloading plugin: imgpng
  compiz (core) - Info: Stopping plugin: mousepoll
  compiz (core) - Info: Unloading plugin: mousepoll
  compiz (core) - Info: Stopping plugin: commands
  compiz (core) - Info: Unloading plugin: commands
  compiz (core) - Info: Stopping plugin: opengl
  compiz (core) - Info: Unloading plugin: opengl
  compiz (core) - Info: Stopping plugin: composite
  compiz (core) - Info: Unloading plugin: composite
  compiz (core) - Info: Stopping plugin: ccp
  compiz (core) - Info: Unloading plugin: ccp
  compiz (core) - Info: Stopping plugin: core
  compiz (core) - Info: Unloading plugin: core
  darryl@Server:~$ 

  darryl@Server:~$ unity
  unity-panel-service stop/waiting
  compiz (core) - Info: Loading plugin: core
  compiz (core) - Info: Starting plugin: core
  unity-panel-service start/running, process 14103
  compiz (core) - Info: Loading plugin: ccp
  compiz (core) - Info: Starting plugin: ccp
  compizconfig - Info: Backend     : gsettings
  compizconfig - Info: Integration : true
  compizconfig - Info: Profile     : unity
  compiz (core) - Info: Loading plugin: composite
  compiz (core) - Info: Starting plugin: composite
  compiz (core) - Info: Loading plugin: opengl
  compiz (core) - Info: Unity is fully supported by your hardware.
  compiz (core) - Info: Unity is fully supported by your hardware.
  compiz (core) - Info: Starting plugin: opengl
  compiz (core) - Info: Loading plugin: commands
  compiz (core) - Info: Starting plugin: commands
  compiz (core) - Info: Loading plugin: mousepoll
  compiz (core) - Info: Starting plugin: mousepoll
  compiz (core) - Info: Loading plugin: imgpng
  compiz (core) - Info: Starting plugin: imgpng
  compiz (core) - Info: Loading plugin: snap
  compiz (core) - Info: Starting plugin: snap
  compiz (core) - Info: Loading plugin: grid
  compiz (core) - Info: Starting plugin: grid
  compiz (core) - Info: Loading plugin: vpswitch
  compiz (core) - Info: Starting plugin: vpswitch
  compiz (core) - Info: Loading plugin: compiztoolbox
  compiz (core) - Info: Starting plugin: compiztoolbox
  compiz (core) - Info: Loading plugin: move
  compiz (core) - Info: Starting plugin: move
  compiz (core) - Info: Loading plugin: wall
  compiz (core) - Info: Starting plugin: wall
  compiz (core) - Info: Loading plugin: place
  compiz (core) - Info: Starting plugin: place
  compiz (core) - Info: Loading plugin: regex
  compiz (core) - Info: Starting plugin: regex
  compiz (core) - Info: Loading plugin: copytex
  compiz (core) - Info: Starting plugin: copytex
  compiz (core) - Info: Loading plugin: animation
  compiz (core) - Info: Starting plugin: animation
  compiz (core) - Info: Loading plugin: workarounds
  compiz (core) - Info: Starting plugin: workarounds
  compiz (core) - Info: Loading plugin: expo
  compiz (core) - Info: Starting plugin: expo
  compiz (core) - Info: Loading plugin: resize
  compiz (core) - Info: Starting plugin: resize
  compiz (core) - Info: Loading plugin: ezoom
  compiz (core) - Info: Starting plugin: ezoom
  compiz (core) - Info: Loading plugin: fade
  compiz (core) - Info: Starting plugin: fade
  compiz (core) - Info: Loading plugin: unitymtgrabhandles
  compiz (core) - Info: Starting plugin: unitymtgrabhandles
  compiz (core) - Info: Loading plugin: session
  compiz (core) - Info: Starting plugin: session
  compiz (core) - Info: Loading plugin: scale
  compiz (core) - Info: Starting plugin: scale
  compiz (core) - Info: Loading plugin: unityshell
  compiz (core) - Info: Starting plugin: unityshell
  WARN  2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.Shell' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:38:45 unity.debug.interface DebugDBusInterface.cpp:217 Unable to load entry point in libxpathselect: libxpathselect.so.1.4: cannot open shared object file: No such file or directory -- full D-Bus introspection will not be available
  WARN  2016-01-04 08:38:45 xim.controller XIMController.cpp:103 IBus natively supported.
  WARN  2016-01-04 08:38:45 unity.dash.gsettingsscopereader GSettingsScopes.cpp:108 Error fetching protocol metadata for scope: social.scope : Valid key file could not be found in search dirs
  WARN  2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Launcher' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Dash' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.SessionManager.EndSessionDialog' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Session' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.ScreenSaver' yet as we don't have a connection, waiting for it...
  WARN  2016-01-04 08:38:45 unityo (appinfo2) <unknown>:0 g_settings_set_value: value for key 'visual-bell-type' in schema 'org.gnome.desktop.wm.preferences' is outside of valid range
  ERROR 2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:538 DBus name lost 'org.gnome.Shell'
  ERROR 2016-01-04 08:38:45 unity.glib.dbus.server GLibDBusServer.cpp:538 DBus name lost 'com.canonical.Unity'
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:38:45 unity.key.gnome.grabber GnomeKeyGrabber.cpp:99 Trying to grab a disabled action, we skip it
  WARN  2016-01-04 08:44:36 unity.iconloader IconLoader.cpp:755 Unable to load icon file:/// at size -1x22: Can't open directory
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 atk_object_ref_state_set: assertion 'ATK_IS_OBJECT (accessible)' failed
  ERROR 2016-01-04 08:51:09 unity <unknown>:0 atk_state_set_contains_state: assertion 'ATK_IS_STATE_SET (set)' failed
  ERROR 2016-01-04 08:51:09 unityte <unknown>:0 g_object_unref: assertion 'G_IS_OBJECT (object)' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 atk_object_ref_state_set: assertion 'ATK_IS_OBJECT (accessible)' failed
  ERROR 2016-01-04 08:51:18 unity <unknown>:0 atk_state_set_contains_state: assertion 'ATK_IS_STATE_SET (set)' failed
  ERROR 2016-01-04 08:51:18 unityte <unknown>:0 g_object_unref: assertion 'G_IS_OBJECT (object)' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:51:20 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 AtkObject* unity_a11y_get_accessible(nux::Object*): assertion 'object != NULL' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 atk_object_ref_state_set: assertion 'ATK_IS_OBJECT (accessible)' failed
  ERROR 2016-01-04 08:52:36 unity <unknown>:0 atk_state_set_contains_state: assertion 'ATK_IS_STATE_SET (set)' failed
  ERROR 2016-01-04 08:52:36 unityte <unknown>:0 g_object_unref: assertion 'G_IS_OBJECT (object)' failed

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
  Uname: Linux 4.2.0-22-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  Date: Mon Jan  4 08:57:07 2016
  DistUpgraded: 2015-11-24 09:36:20,459 DEBUG enabling apt cron job
  DistroCodename: wily
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: ASRock Incorporation Device [1849:0412]
  InstallationDate: Installed on 2014-07-20 (532 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic root=UUID=42e9056a-4a79-4966-8bf7-a80cea2baca9 ro quiet splash nomdmonddf nomdmonisw crashkernel=384M-:128M vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to wily on 2015-11-24 (40 days ago)
  dmi.bios.date: 08/20/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P2.40
  dmi.board.name: Z97 Extreme6
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.40:bd08/20/2015:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ97Extreme6:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.64-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
  xserver.bootTime: Mon Jan  4 02:25:31 2016
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                1978 
   vendor                                     SAM
  xserver.version: 2:1.17.2-1ubuntu9.1

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References

[Bug 1530872] [NEW] Unity icons stops responding
From: Darryl Champagne, 2016-01-04