release 43.0 breaks Xfce X2Go sessions on Fedora

I use Fedora 36 Workstation with GNOME locally. And on the same computer Xfce locally and as an X2Go session for remote desktop. In Xfce X2Go session large shadows around windows can be disabled with Applications -- Settings -- Window Manager Tweaks -- Compositor: [] Enable display compositing

After the latest update the local Xfce session works, but in the X2Go Xfce session I was stuck with a fine checkerboard background. Nothing else appeared. My workaround:

kill X2Go session on X2Go server (or just reboot the server computer): x2goterminate-session $(x2golistsessions_root | cut -d "|" -f 2)
install and use LXDE as X2Go session: dnf group install -y "LXDE Desktop"

After some hours of bisecting downgrades/updates I found that the Xfce X2Go session breaks with the update from libwnck3-40.1-1.fc36.x86_64 to libwnck3-43.0-1.fc36.x86_64.

Testing is easy and fast. After terminating the X2Go session no reboot required between update/downgrade: dnf downgrade -y --allowerasing libwnck3 and dnf update -y libwnck3

I can reproduce the problem on a test installation of Fedora 36 in a virtual machine:

$ sudo dnf install -y x2goserver
$ sudo dnf group install -y "Xfce Desktop"
$ reboot

Instead of a checkerboard I get error message in X2Go window:

Unable to get connection to the message bus session
Could not connect: Connection refused
[Close]

Is this a libwnck bug? Or do I need to report it to an Xfce or X2Go component? Thank you for your guidance. X2Go prints session messages to ${HOME}/.xsession-x2go-${HOSTNAME}-errors (errors.old is the previous session log). :

Output with 43.0 - Click to expand

XSession-x2go: X session started for user at Wed Sep 28 05:30:38 PM CEST 2022 xfce4-session-Message: 17:30:40.947: SSH authentication agent is already running

(xfwm4:7207): xfwm4-WARNING **: 17:30:41.274: XSync extension too old (3.0).

(xfwm4:7207): xfwm4-WARNING **: 17:30:41.295: The display does not support the XComposite extension.

(xfwm4:7207): xfwm4-WARNING **: 17:30:41.301: The display does not support the XPresent extension.

(xfwm4:7207): xfwm4-WARNING **: 17:30:41.301: Compositing manager disabled.

(xfsettingsd:7215): xfsettingsd-CRITICAL **: 17:30:41.764: Your XI is too old (1.3) version 1.4 is required.

(xfsettingsd:7215): xfsettingsd-WARNING **: 17:30:41.767: Failed to create device filter vmware-user: could not open /proc/fs/vmblock/dev Failed to rename ‘/home/user/.abrt/spool’ to ‘/home/user/.cache/abrt/spool’: No such file or directory Failed to rename ‘/home/user/.abrt/settings’ to ‘/home/user/.config/abrt/settings’: No such file or directory Tracker-Message: 17:30:43.222: Initializing... Tracker-Message: 17:30:43.306: Retrieving and scheduling feeds... Tracker-Message: 17:30:43.388: No feeds set up, nothing more to do

(process:7276): GLib-CRITICAL **: 17:30:43.459: g_strv_contains: assertion 'str != NULL' failed

(vmware-user:7260): Gtk-WARNING **: 17:30:43.567: gtk_disable_setlocale() must be called before gtk_init()

** (xfce4-power-manager:7305): WARNING **: 17:30:43.843: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.freedesktop.PowerManagement': no such name

(xfce4-power-manager:7305): xfce4-power-manager-WARNING **: 17:30:43.859: Monitor is not DPMS capable

(xfce4-power-manager:7305): GLib-GObject-WARNING **: 17:30:44.006: ../gobject/gsignal.c:2613: signal 'Changed' is invalid for instance '0x55f759985140' of type 'GDBusProxy'

** (xfce4-screensaver:7292): WARNING **: 17:30:44.231: screensaver already running in this session

(xfce4-power-manager:7305): xfce4-power-manager-WARNING **: 17:30:45.321: could not map keysym 1008ffa8 to keycode

(xfce4-power-manager:7305): xfce4-power-manager-WARNING **: 17:30:45.525: Unable to inhibit systemd sleep: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied

** (xfce4-power-manager:7305): WARNING **: 17:30:45.526: No outputs have backlight property

(xfce4-power-manager:7305): xfce4-power-manager-WARNING **: 17:30:45.597: Failed to get keyboard max brightness level : GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Object does not exist at path “/org/freedesktop/UPower/KbdBacklight”

** (wrapper-2.0:7232): WARNING **: 17:30:45.628: No outputs have backlight property

(wrapper-2.0:7258): Gtk-WARNING **: 17:30:46.104: Negative content width -1 (allocation 1, extents 1x1) while allocating gadget (node button, owner XfceArrowButton)

(xfce4-panel:7218): Gdk-WARNING **: 17:30:46.223: The program 'xfce4-panel' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 921 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(xfce4-session:6949): GLib-WARNING **: 17:30:46.238: GChildWatchSource: Exit status of a child process was requested but ECHILD was received by waitpid(). See the documentation of g_child_watch_source_new() for possible causes.

(wrapper-2.0:7233): Gtk-WARNING **: 17:30:46.380: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner GtkToggleButton)

(wrapper-2.0:7233): GLib-GObject-CRITICAL **: 17:30:46.381: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(wrapper-2.0:7231): Gtk-WARNING **: 17:30:46.390: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PulseaudioButton)

** (xfdesktop:7227): WARNING **: 17:30:46.770: Failed to set the background '/usr/share/backgrounds/images/default.png': GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface “org.freedesktop.DisplayManager.AccountsService”

(xfdesktop:7227): Gdk-WARNING **: 17:30:47.217: The program 'xfdesktop' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 430 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(xfdesktop:7707): Gdk-WARNING **: 17:30:47.790: The program 'xfdesktop' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 245 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

** (wrapper-2.0:7709): WARNING **: 17:30:47.933: No outputs have backlight property

(xfce4-panel:7622): Gdk-WARNING **: 17:30:48.203: The program 'xfce4-panel' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 888 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(wrapper-2.0:7708): Gtk-WARNING **: 17:30:48.357: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PulseaudioButton)

(wrapper-2.0:7710): Gtk-WARNING **: 17:30:48.380: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner GtkToggleButton)

(wrapper-2.0:7710): GLib-GObject-CRITICAL **: 17:30:48.381: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

** (xfdesktop:7726): WARNING **: 17:30:48.595: Failed to set the background '/usr/share/backgrounds/images/default.png': GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface “org.freedesktop.DisplayManager.AccountsService”

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:48.671: Could not add mark for path '/home/user': Invalid cross-device link

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:48.808: Could not add mark for path '/home/user/Downloads': Invalid cross-device link

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:48.844: Could not add mark for path '/home/user/Desktop': Invalid cross-device link

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:49.005: Could not add mark for path '/home/user/Documents': Invalid cross-device link

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:49.020: Could not add mark for path '/home/user/Music': Invalid cross-device link

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:49.021: Could not add mark for path '/home/user/Pictures': Invalid cross-device link

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:49.031: Could not add mark for path '/home/user/Videos': Invalid cross-device link

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:49.042: Could not add mark for path '/home/user/Videos/AnyDesk': Invalid cross-device link

(xfdesktop:7726): Gdk-WARNING **: 17:30:49.105: The program 'xfdesktop' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 426 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:49.237: Could not add mark for path '/usr/local/share/applications': Invalid cross-device link

(xfdesktop:7784): Gdk-WARNING **: 17:30:50.042: The program 'xfdesktop' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 246 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

** (wrapper-2.0:7778): WARNING **: 17:30:50.140: No outputs have backlight property

(xfce4-panel:7748): Gdk-WARNING **: 17:30:50.337: The program 'xfce4-panel' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 879 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(wrapper-2.0:7778): xfce4-panel-wrapper-WARNING **: 17:30:50.464: ProviderSignal call failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.73 was not provided by any .service files

(wrapper-2.0:7779): GLib-GObject-CRITICAL **: 17:30:50.560: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:51.223: Could not add mark for path '/usr/share/applications': Invalid cross-device link

** (xfdesktop:7797): WARNING **: 17:30:51.367: Failed to set the background '/usr/share/backgrounds/images/default.png': GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface “org.freedesktop.DisplayManager.AccountsService”

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:51.416: Could not add mark for path '/usr/share/applications/screensavers': Invalid cross-device link

(xfdesktop:7797): Gdk-WARNING **: 17:30:51.431: The program 'xfdesktop' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 274 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(tracker-miner-fs-3:7245): Tracker-WARNING **: 17:30:51.517: Could not add mark for path '/home/user/.local/share/applications': Invalid cross-device link

** (wrapper-2.0:7815): WARNING **: 17:30:51.874: No outputs have backlight property

(xfdesktop:7833): Gdk-WARNING **: 17:30:51.943: The program 'xfdesktop' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 246 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(xfce4-panel:7808): Gdk-WARNING **: 17:30:52.147: The program 'xfce4-panel' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 862 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(wrapper-2.0:7815): Gtk-WARNING **: 17:30:52.246: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PowerManagerButton)

(wrapper-2.0:7827): Gtk-WARNING **: 17:30:52.249: Negative content width -1 (allocation 1, extents 1x1) while allocating gadget (node button, owner XfceArrowButton)

(wrapper-2.0:7816): Gtk-WARNING **: 17:30:52.251: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner GtkToggleButton)

(wrapper-2.0:7816): GLib-GObject-CRITICAL **: 17:30:52.251: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(wrapper-2.0:7814): Gtk-WARNING **: 17:30:52.263: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PulseaudioButton)

** (wrapper-2.0:7887): WARNING **: 17:30:53.784: No outputs have backlight property

(xfce4-panel:7863): Gdk-WARNING **: 17:30:53.995: The program 'xfce4-panel' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 852 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(wrapper-2.0:7886): Gtk-WARNING **: 17:30:54.135: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PulseaudioButton)

(wrapper-2.0:7897): GLib-GObject-WARNING **: 17:30:54.144: ../gobject/gsignal.c:2731: instance '0x5575db0f3e60' has no handler with id '55'

(wrapper-2.0:7888): GLib-GObject-CRITICAL **: 17:30:54.164: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

** (wrapper-2.0:7926): WARNING **: 17:30:55.207: No outputs have backlight property

(xfce4-panel:7911): Gdk-WARNING **: 17:30:55.267: The program 'xfce4-panel' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 858 error_code 1 request_code 148 (X-Resource) minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

(wrapper-2.0:7927): xfce4-panel-wrapper-WARNING **: 17:30:55.287: ProviderSignal call failed: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying

(wrapper-2.0:7925): xfce4-panel-wrapper-WARNING **: 17:30:55.287: ProviderSignal call failed: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying

(wrapper-2.0:7926): xfce4-panel-wrapper-WARNING **: 17:30:55.338: ProviderSignal call failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.95 was not provided by any .service files

(wrapper-2.0:7927): GLib-GObject-CRITICAL **: 17:30:55.364: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

Output with 40.1 - Click to expand

XSession-x2go: X session started for user at Wed Sep 28 05:37:39 PM CEST 2022 xfce4-session-Message: 17:37:42.971: SSH authentication agent is already running

(xfwm4:9756): xfwm4-WARNING **: 17:37:43.305: XSync extension too old (3.0).

(xfwm4:9756): xfwm4-WARNING **: 17:37:43.327: The display does not support the XComposite extension.

(xfwm4:9756): xfwm4-WARNING **: 17:37:43.333: The display does not support the XPresent extension.

(xfwm4:9756): xfwm4-WARNING **: 17:37:43.333: Compositing manager disabled.

(xfsettingsd:9764): xfsettingsd-CRITICAL **: 17:37:43.795: Your XI is too old (1.3) version 1.4 is required.

(xfsettingsd:9764): xfsettingsd-WARNING **: 17:37:43.797: Failed to create device filter

** (xfce4-power-manager:9781): WARNING **: 17:37:45.264: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.xfce.PowerManager': no such name

** (xfce4-power-manager:9781): WARNING **: 17:37:45.265: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.freedesktop.PowerManagement': no such name

Xfce power manager is not running

(xfce4-power-manager:9781): xfce4-power-manager-WARNING **: 17:37:45.272: Monitor is not DPMS capable

(xfce4-power-manager:9781): libnotify-WARNING **: 17:37:45.283: Failed to connect to proxy

(xfce4-power-manager:9781): GLib-GObject-WARNING **: 17:37:45.340: ../gobject/gsignal.c:2613: signal 'Changed' is invalid for instance '0x5636622f10c0' of type 'GDBusProxy' vmware-user: could not open /proc/fs/vmblock/dev Failed to rename ‘/home/user/.abrt/spool’ to ‘/home/user/.cache/abrt/spool’: No such file or directory Failed to rename ‘/home/user/.abrt/settings’ to ‘/home/user/.config/abrt/settings’: No such file or directory Tracker-Message: 17:37:45.801: Initializing... Tracker-Message: 17:37:45.870: Retrieving and scheduling feeds...

(xfce4-power-manager:9781): xfce4-power-manager-WARNING **: 17:37:45.924: could not map keysym 1008ffa8 to keycode

Tracker-Message: 17:37:45.943: No feeds set up, nothing more to do

(process:9855): GLib-CRITICAL **: 17:37:45.992: g_strv_contains: assertion 'str != NULL' failed

(vmware-user:9832): Gtk-WARNING **: 17:37:46.411: gtk_disable_setlocale() must be called before gtk_init()

(xfce4-power-manager:9781): xfce4-power-manager-WARNING **: 17:37:46.502: Unable to inhibit systemd sleep: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied

** (xfce4-power-manager:9781): WARNING **: 17:37:46.504: No outputs have backlight property

(xfce4-power-manager:9781): xfce4-power-manager-WARNING **: 17:37:46.628: Failed to get keyboard max brightness level : GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Object does not exist at path “/org/freedesktop/UPower/KbdBacklight” Xfce Power Manager: Another power manager is already running

** (xfce4-screensaver:9876): WARNING **: 17:37:46.928: screensaver already running in this session

** (wrapper-2.0:9782): WARNING **: 17:37:48.196: No outputs have backlight property

(wrapper-2.0:9783): Gtk-WARNING **: 17:37:48.644: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner GtkToggleButton)

(wrapper-2.0:9799): Gtk-WARNING **: 17:37:48.690: Negative content width -1 (allocation 1, extents 1x1) while allocating gadget (node button, owner XfceArrowButton)

(wrapper-2.0:9782): Gtk-WARNING **: 17:37:48.732: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PowerManagerButton)

(wrapper-2.0:9780): Gtk-WARNING **: 17:37:48.753: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PulseaudioButton)

** (xfdesktop:9776): WARNING **: 17:37:49.028: Failed to set the background '/usr/share/backgrounds/images/default.png': GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface “org.freedesktop.DisplayManager.AccountsService”

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.561: Could not add mark for path '/home/user': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.566: Could not add mark for path '/home/user/Downloads': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.568: Could not add mark for path '/home/user/Desktop': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.569: Could not add mark for path '/home/user/Documents': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.570: Could not add mark for path '/home/user/Music': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.571: Could not add mark for path '/home/user/Pictures': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.572: Could not add mark for path '/home/user/Videos': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.573: Could not add mark for path '/home/user/Videos/AnyDesk': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.575: Could not add mark for path '/usr/local/share/applications': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.580: Could not add mark for path '/usr/share/applications': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.585: Could not add mark for path '/usr/share/applications/screensavers': Invalid cross-device link

(tracker-miner-fs-3:9808): Tracker-WARNING **: 17:37:49.587: Could not add mark for path '/home/user/.local/share/applications': Invalid cross-device link

(xfce4-session:9497): GLib-WARNING **: 17:37:59.273: GChildWatchSource: Exit status of a child process was requested but ECHILD was received by waitpid(). See the documentation of g_child_watch_source_new() for possible causes.

(xfce4-power-manager:9781): GLib-GObject-CRITICAL **: 17:37:59.290: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(wrapper-2.0:9783): GLib-GObject-CRITICAL **: 17:37:59.509: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Another notification daemon is running, exiting

Edited Sep 28, 2022 by René Genz