Thanks a lot for your tips.
I found that:
- On Xfce4, when I clicked the network icon on the upper right corner of the desktop, the system turns into a frozen state at once.
- After each reconnection, the following appears always:

So I think the frozen problem may be partly caused by the network manager. I reinstalled the network manager with "sudo apt install network-manager network-manager-gnome" (I think MATE and Xfce4 can also use network-manager-gnome). But there is no help.
Except the frozen problem, I also oft got disconnected problems suddenly like "Connection closed" and "WriteExact: Socket error while running", which I have never encountered on an AMD64-version before.
For the frozen problem, I tried each of your tips, but the problem exists still.
1. Disconnect and reconnect to the TurboVNC session. This will tell us
whether the remote session is actually frozen or whether there is some
issue with the viewer or the network layer.
--> The remote session is actually frozen.
2. If the session is still frozen after disconnecting and reconnecting,
try logging into the server with SSH and running
DISPLAY=:{n} xdpyinfo
where {n} is the X display number of the session. This will tell us
whether the actual TurboVNC X server is frozen.
--> xdpyinfo: unable to open display ":1"
and sometimes it shows nothing.
3. If you are using the Windows native TurboVNC Viewer, try using the
Windows/Java TurboVNC Viewer instead (or vice versa.) This will tell us
whether the issue is specific to one of those viewer implementations.
If the session is still frozen after Step 1, then restart it before
trying to use the other viewer.
--> With the Windows/Java TurboVNV, I got the frozen problem even more frequently.
4. If you are using the Windows/Java TurboVNC Viewer with built-in TLS
encryption enabled (which is the default), try disabling TLS encryption.
This will tell us whether the issue is related to OpenSSL.
--> I disabled TLS encryption, but also got the frozen problem.
5. Try disabling the screen blanker in the TurboVNC session.
--> I disabled the screen blanker, but also got the frozen problem.
6. Check the server log
(~/.vnc/{hostname}-{TurboVNC-display-number}.log) for any errors that
might be occurring just prior to the freeze.
--> I checked the log-file when no problem has appeared. There are already many "error" and "failed" etc., which never appear on an AMD64-version, as follows:
TurboVNC Server (Xvnc) 64-bit v2.2.6 (build 20201203)
Copyright (C) 1999-2020 The VirtualGL Project and many others (see README.txt)
09/12/2020 13:01:34 Using security configuration file /opt/TurboVNC/etc/turbovncserver-security.conf
09/12/2020 13:01:34 Enabled security type 'tlsvnc'
09/12/2020 13:01:34 Enabled security type 'tlsotp'
09/12/2020 13:01:34 Enabled security type 'tlsplain'
09/12/2020 13:01:34 Enabled security type 'x509vnc'
09/12/2020 13:01:34 Enabled security type 'x509otp'
09/12/2020 13:01:34 Enabled security type 'x509plain'
09/12/2020 13:01:34 Enabled security type 'vnc'
09/12/2020 13:01:34 Enabled security type 'otp'
09/12/2020 13:01:34 Enabled security type 'unixlogin'
09/12/2020 13:01:34 Enabled security type 'plain'
09/12/2020 13:01:34 Desktop name 'TurboVNC: xavier:2 (kfzb)' (xavier:2)
09/12/2020 13:01:34 Protocol versions supported: 3.3, 3.7, 3.8, 3.7t, 3.8t
09/12/2020 13:01:34 Listening for VNC connections on TCP port 5902
09/12/2020 13:01:34 Interface 0.0.0.0
09/12/2020 13:01:34 Framebuffer: BGRX 8/8/8/8
09/12/2020 13:01:34 New desktop size: 1240 x 900
09/12/2020 13:01:34 New screen layout:
09/12/2020 13:01:34 0x00000040 (output 0x00000040): 1240x900+0+0
09/12/2020 13:01:34 Maximum clipboard transfer size: 1048576 bytes
09/12/2020 13:01:34 VNC extension running!
Unable to create /home/kfzb/.dbus/session-bus
gnome-keyring-daemon: insufficient process capabilities, insecure memory might get used
mate-session[10309]: WARNING: Unable to find provider '' of required component 'dock'
Window manager warning: Log level 128: Name com.canonical.AppMenu.Registrar does not exist on the session bus
Window manager warning: Log level 16: XPresent is not compatible with your current system configuration.
caja-dropbox is not installed, doing nothing.
(process:10492): indicator-sound-WARNING **: 13:01:39.199: volume-control-pulse.
vala:735: unable to get pulse unix socket: GDBus.Error:org.freedesktop.DBus.Error.
ServiceUnknown: The name org.PulseAudio1 was not provided by any .service files
gnome-keyring-daemon: insufficient process capabilities, insecure memory might get used
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
gnome-keyring-daemon: insufficient process capabilities, insecure memory might get used
(process:10492): AccountsService-WARNING **: 13:01:39.333: Could not get current seat: No data available
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
gnome-keyring-daemon: insufficient process capabilities, insecure memory might get used
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
(process:10544): AccountsService-WARNING **: 13:01:39.790: Could not get current seat: No data available
Failure: Module initialization failed
*** ERROR ***
TI:13:01:41 TH:0x5594527100 FI:gpm-manager.c FN:gpm_manager_systemd_inhibit,1782
- Error in dbus - GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied
Traceback:
mate-power-manager(+0x1af94) [0x55628e1f94]
mate-power-manager(+0x133ec) [0x55628da3ec]
/usr/lib/aarch64-linux-gnu/libgobject-2.0.so.0(g_type_create_instance+0x2ec) [0x7f8ed08dc4]
no maximize: true
** (update-notifier:10515): WARNING **: 13:01:41.302: already running?
(nm-applet:10473): nm-applet-WARNING **: 13:01:41.924: GDBus.Error:org.freedesktop.NetworkManager.AgentManager.PermissionDenied: An agent with this ID is already registered for this user.
No nvidia-settings and prime-select detected.
Initializing caja-open-terminal extension
09/12/2020 13:01:42 Autoprobing TCP port in (all) network interface
09/12/2020 13:01:42 Listening IPv6://[::]:5900
09/12/2020 13:01:42 Problems in NewSocketListenTCP()
09/12/2020 13:01:42 Listening IPv6://[::]:5901
09/12/2020 13:01:42 Autoprobing selected port 5901
09/12/2020 13:01:42 Advertising security type: 'TLS' (18)
09/12/2020 13:01:42 Re-binding socket to listen for VNC connections on TCP port 5901 in (all) interface
09/12/2020 13:01:42 Listening IPv6://[::]:5901
09/12/2020 13:01:42 Clearing securityTypes
09/12/2020 13:01:42 Advertising security type: 'TLS' (18)
09/12/2020 13:01:42 Clearing securityTypes
09/12/2020 13:01:42 Advertising security type: 'TLS' (18)
09/12/2020 13:01:42 Advertising authentication type: 'No Authentication' (1)
09/12/2020 13:01:42 Re-binding socket to listen for VNC connections on TCP port 5901 in (all) interface
09/12/2020 13:01:42 Listening IPv6://[::]:5901
09/12/2020 13:01:42 Clearing securityTypes
09/12/2020 13:01:42 Clearing authTypes
09/12/2020 13:01:42 Advertising security type: 'TLS' (18)
09/12/2020 13:01:42 Advertising authentication type: 'No Authentication' (1)
09/12/2020 13:01:42 Advertising security type: 'No Authentication' (1)
blueman-applet version 2.0.5 starting
There is an instance already running
(nm-applet:10473): Gtk-WARNING **: 13:01:42.838: Can't set a parent on widget which has a parent
(polkit-mate-authentication-agent-1:10476): polkit-mate-1-WARNING **: 13:01:43.124: No icon for themed icon with name 'nm-icon'
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
Gtk-Message: 13:01:43.365: GtkDialog mapped without a transient parent. This is discouraged.
Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x2600007 (Authentica)
Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
INFO:root:The HUD is disabled via org.mate.hud in gsettings.
(nm-applet:10473): Gtk-CRITICAL **: 13:02:08.053: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:08.053: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:08.128: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:14.478: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:14.478: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:14.573: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:14.633: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:14.633: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:14.719: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:20.658: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:20.659: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:20.794: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:20.953: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:20.954: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:21.066: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:22.373: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:22.373: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:22.562: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:22.655: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:22.655: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:22.757: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:26.204: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:26.204: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:26.350: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:02:26.454: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:02:26.454: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:02:26.550: Can't set a parent on widget which has a parent
09/12/2020 13:03:58 Got connection from client 127.0.0.1
09/12/2020 13:03:58 Using protocol version 3.8
09/12/2020 13:03:58 Enabling TightVNC protocol extensions
09/12/2020 13:03:58 Advertising Tight auth cap 'VENCRYPT'
09/12/2020 13:03:58 Advertising Tight auth cap 'VNCAUTH_'
09/12/2020 13:03:58 Advertising Tight auth cap 'ULGNAUTH'
09/12/2020 13:04:00 Client 127.0.0.1 gone
09/12/2020 13:04:00 Statistics:
09/12/2020 13:04:00 framebuffer updates 0, rectangles 0, bytes 0
09/12/2020 13:04:10 Got connection from client 127.0.0.1
09/12/2020 13:04:10 Using protocol version 3.8
09/12/2020 13:04:10 Enabling TightVNC protocol extensions
09/12/2020 13:04:10 Advertising Tight auth cap 'VENCRYPT'
09/12/2020 13:04:10 Advertising Tight auth cap 'VNCAUTH_'
09/12/2020 13:04:10 Advertising Tight auth cap 'ULGNAUTH'
09/12/2020 13:04:13 Full-control authentication enabled for 127.0.0.1
09/12/2020 13:04:13 Pixel format for client
127.0.0.1:
09/12/2020 13:04:13 32 bpp, depth 24, little endian
09/12/2020 13:04:13 true colour: max r 255 g 255 b 255, shift r 16 g 8 b 0
09/12/2020 13:04:13 no translation needed
09/12/2020 13:04:13 Using tight encoding for client 127.0.0.1
09/12/2020 13:04:13 Interframe comparison enabled
09/12/2020 13:04:13 Enabling full-color cursor updates for client 127.0.0.1
09/12/2020 13:04:13 Enabling cursor position updates for client 127.0.0.1
09/12/2020 13:04:13 Using JPEG subsampling 0, Q92 for client 127.0.0.1
09/12/2020 13:04:13 Using JPEG quality 80 for client 127.0.0.1
09/12/2020 13:04:13 Using JPEG subsampling 2 for client 127.0.0.1
09/12/2020 13:04:13 Enabling LastRect protocol extension for client 127.0.0.1
09/12/2020 13:04:13 Enabling Desktop Size protocol extension for client 127.0.0.1
09/12/2020 13:04:13 Enabling Extended Desktop Size protocol extension for client 127.0.0.1
09/12/2020 13:04:13 Enabling Continuous Updates protocol extension for client 127.0.0.1
09/12/2020 13:04:13 Enabling Fence protocol extension for client 127.0.0.1
09/12/2020 13:04:13 Enabling GII protocol extension for client 127.0.0.1
09/12/2020 13:04:13 Using Tight compression level 1 for client 127.0.0.1
09/12/2020 13:04:13 Using 4 threads for Tight encoding
09/12/2020 13:04:13 Client supports GII version 1
09/12/2020 13:04:13 New screen layout:
09/12/2020 13:04:13 0x00000040 (output 0x00000040): 1240x900+0+0
09/12/2020 13:04:13 Continuous updates enabled
09/12/2020 13:04:13 Continuous updates enabled
09/12/2020 13:04:13 Continuous updates enabled
09/12/2020 13:04:16 New desktop size: 1920 x 1112
09/12/2020 13:04:16 Interframe comparison disabled
09/12/2020 13:04:16 Interframe comparison enabled
09/12/2020 13:04:16 New screen layout:
09/12/2020 13:04:16 0x00000040 (output 0x00000040): 1920x1112+0+0
09/12/2020 13:04:16 Continuous updates enabled
09/12/2020 13:04:16 Continuous updates enabled
(nm-applet:10473): Gtk-CRITICAL **: 13:06:28.964: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:06:28.964: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:06:29.032: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:06:38.977: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:06:38.978: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:06:39.008: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:06:39.040: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:06:39.040: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:06:39.055: Can't set a parent on widget which has a parent
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
untimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
** (zeitgeist-datahub:10534): WARNING **: 13:12:44.823: zeitgeist-datahub.vala:210: Error during inserting events: GDBus.Error:org.gnome.zeitgeist.EngineError.DatabaseError: SQL error: 5, database is locked
** (zeitgeist-datahub:10534): WARNING **: 13:14:43.990: zeitgeist-datahub.vala:210: Error during inserting events: GDBus.Error:org.gnome.zeitgeist.EngineError.InvalidArgument: Incomplete event: interpretation, manifestation and actor are required
[11470:11470:1209/131445.381822:ERROR:angle_platform_impl.cc(43)] Display.cpp:805 (initialize): ANGLE Display::initialize error 12289: GLX is not present.
[11470:11470:1209/131445.382387:ERROR:gl_surface_egl.cc(773)] EGL Driver message (Critical) eglInitialize: GLX is not present.
[11470:11470:1209/131445.382608:ERROR:gl_surface_egl.cc(1322)] eglInitialize OpenGL failed with error EGL_NOT_INITIALIZED, trying next display type
[11470:11470:1209/131445.383767:ERROR:angle_platform_impl.cc(43)] Display.cpp:805 (initialize): ANGLE Display::initialize error 12289: GLX is not present.
[11470:11470:1209/131445.384026:ERROR:gl_surface_egl.cc(773)] EGL Driver message (Critical) eglInitialize: GLX is not present.
[11470:11470:1209/131445.384245:ERROR:gl_surface_egl.cc(1322)] eglInitialize OpenGLES failed with error EGL_NOT_INITIALIZED
[11470:11470:1209/131445.384435:ERROR:gl_initializer_linux_x11.cc(160)] GLSurfaceEGL::InitializeOneOff failed.
[11470:11470:1209/131445.413873:ERROR:viz_main_impl.cc(150)] Exiting GPU process due to errors during initialization
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x38000f5 (NetworkMan)
Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
(gedit:11421): Gtk-WARNING **: 13:15:46.650: Attempting to read the recently used resources file at '/home/kfzb/.local/share/recently-used.xbel',
but the parser failed: Failed to open file \u201c/home/kfzb/.local/share/recently-used.xbel\u201d: Permission denied.
(caja:10402): Gtk-WARNING **: 13:15:53.041: Attempting to read the recently used resources file at '/home/kfzb/.local/share/recently-used.xbel', but the parser failed: Failed to open file \u201c/home/kfzb/.local/share/recently-used.xbel\u201d: Permission denied.
(zeitgeist-datahub:10534): Gtk-WARNING **: 13:15:53.041: Attempting to read the recently used resources file at '/home/kfzb/.local/share/recently-used.xbel', but the parser failed: Failed to open file ?/home/kfzb/.local/share/recently-used.xbel?: Permission denied.
(nm-applet:10473): Gtk-CRITICAL **: 13:15:57.908: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:15:57.909: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:15:58.848: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:15:58.912: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:15:58.912: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:15:58.926: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.118: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.118: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:15:59.139: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.168: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.168: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:15:59.211: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.263: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.264: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:15:59.323: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.376: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.376: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:15:59.391: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.416: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:15:59.416: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:15:59.434: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.415: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.415: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:16:02.447: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.467: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.467: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:16:02.513: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.592: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.592: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:16:02.696: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.749: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.749: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:16:02.852: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.970: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:16:02.970: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:16:03.034: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:16:05.862: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:16:05.862: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:16:05.981: Can't set a parent on widget which has a parent
(nm-applet:10473): Gtk-CRITICAL **: 13:16:06.059: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-CRITICAL **: 13:16:06.059: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(nm-applet:10473): Gtk-WARNING **: 13:16:06.143: Can't set a parent on widget which has a parent
(caja:10402): Gtk-CRITICAL **: 13:16:49.403: gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed
(caja:10402): Gtk-CRITICAL **: 13:16:49.404: gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed
(caja:10402): Gtk-CRITICAL **: 13:16:49.404: gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed
(caja:10402): Gtk-CRITICAL **: 13:16:49.405: gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed
(caja:10402): Gtk-CRITICAL **: 13:16:49.405: gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed
(caja:10402): Gtk-CRITICAL **: 13:16:49.405: gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized
RuntimeError: object at 0x7f722775a0 of type RenameMenu is not initialized
RuntimeError: object at 0x7f72277eb0 of type FolderColorMenu is not initialized