My panel is gone

greatjob · 17 March 2023 11:34

edit: Oh hey, rebooting makes the panel come back. But the problem persists, removing a launcher will make the entire panel disappear. This laptop is going to be used by somebody who wouldn't know what to do if "google isn't there anymore" and would have no way of rebooting by themself.

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So, I added a shortcut to the panel for chrome by saying 'add to panel'. It doesn't show up the way I want, where it would just have a single icon for chrome when open. It has 2 icons. One that just stupidly sits there all the time in my panel as a shortcut with a smaller icon next to another one with a larger icon for the open/active chrome app.

So I right click it and say 'remove launcher' because honestly, that looked like the right thing to do. But just assume it was a misclick, because these things happen. Boy did I underestimate how ridiculous you people made this 'baby's first linux distro'. Who knew some absolute genius would decide that ANYBODY would want to make the entire panel disappear, with no way of restoring it?

Shameful.

I tried going into settings for 'Panel' and it just tells me 'GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown. The name org.xfce.Panel was not provided by any .service files'

Going to just reinstall because I don't like my chances of getting help before I need to have this thing ready in a few hours.

zenzen · 17 March 2023 13:11

I just tried on a virtual machine and I get the same behavior, but only with certain programs. For example no issues with Mahjongg (first icon I run into), but Rhythmbox causes this issue.

Opening the panel from the terminal allows to capture some output of the errors happening when reproducing the issue. Unfortunately I have no idea what these mean but hopefully someone more knowledgeable can make some sense out it?

(xfce4-panel:1662): GLib-GObject-CRITICAL **: 14:08:54.799: g_object_set_qdata: assertion 'G_IS_OBJECT (object)' failed
(xfce4-panel:1662): GLib-GObject-WARNING **: 14:08:54.801: instance with invalid (NULL) class pointer
(xfce4-panel:1662): GLib-GObject-CRITICAL **: 14:08:54.801: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(xfce4-panel:1662): GLib-GObject-WARNING **: 14:08:54.801: instance with invalid (NULL) class pointer
(xfce4-panel:1662): GLib-GObject-CRITICAL **: 14:08:54.801: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(xfce4-panel:1662): GLib-GObject-CRITICAL **: 14:08:54.801: g_object_unref: assertion 'old_ref > 0' failed
**
libxfce4panel:ERROR:xfce-panel-plugin.c:983:xfce_panel_plugin_finalize: assertion failed: (plugin->priv->menu_items == ((void *)0))
Bail out! libxfce4panel:ERROR:xfce-panel-plugin.c:983:xfce_panel_plugin_finalize: assertion failed: (plugin->priv->menu_items == ((void *)0))
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.825: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): GLib-GObject-CRITICAL **: 14:08:54.825: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.825: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): GLib-GObject-CRITICAL **: 14:08:54.825: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.825: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.825: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.825: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.825: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.825: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.826: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.826: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): GLib-GObject-CRITICAL **: 14:08:54.826: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.826: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): GLib-GObject-CRITICAL **: 14:08:54.826: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.826: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): GLib-GObject-CRITICAL **: 14:08:54.826: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(wrapper-2.0:1666): Gtk-CRITICAL **: 14:08:54.828: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
(wrapper-2.0:1666): GLib-GObject-CRITICAL **: 14:08:54.828: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

Aravisian · 17 March 2023 22:37

This appears to be a bug within XFCE4 Panel that affects some users. I have never encountered it myself and had to do a search on it:

github.com/linuxmint/mint21-beta

[XFCE] Entire bottom panel disappears when removing a panel launcher

opened 11:25PM - 14 Jul 22 UTC

closed 06:35PM - 17 Jul 22 UTC

NintendoManiac64

Duplicate

Easiest way to replicate this issue is: 1. boot the live ISO for XFCE 2. o…n the bottom panel near the left corner, right-click on either Firefox or Thunar and then click "Remove" (and then click "Remove" in the dialog window that appears) 3. ...and your entire bottom panel has now disappeared Interestingly, this does not occur if you instead did a right-click -> "Remove" on the 'Show Desktop' or 'Terminal' panel launchers and, at least with the default configuration, only occurs with Firefox and Thunar. That being said, you can get it to occur with newly-added panels launchers as well via something like the following: 1. boot the live ISO for XFCE 2. in the applications menu, look for Thunderbird, right-click on it, and select "Add to Panel" 3. right click on the newly-added panel launcher for Thunderbird located on the farthest right and select "Remove" (and then click "Remove" in the dialog window that appears) 3. ...and your entire bottom panel has now disappeared

github.com/linuxmint/mint21-beta

xfce4-panel: Removing thunar launcher crashes the panel

opened 10:22AM - 16 Jul 22 UTC

closed 12:08PM - 22 Jul 22 UTC

clatterfordslim

Bug (Confirmed)

Only happens during ISO install, but has been in the XFCE Edition since Ulyssa 2…0.1. It has now come over to Vanessa. When right click remove Thunar off of panel, it removes the panel. It continuously got worse in Uma and Una. Whilst adding apps to panel the wrong app would go up, using Panel-Launcher from Whisker Menu. It would start with Firefox, Terminal, then Thunar. After trying to add App a fourth time it would add it correctly. Removing either Firefox or Thunar off of Panel will cause panel to be removed.

In short: It is not supposed to do that.

swarfendor437 · 17 March 2023 23:19

Is the machine capable of running Core instead of Lite?

337harvey · 18 March 2023 06:39

Applications added to the panel are supposed to be quick links to your most users apps. When activated, the task panel displays any open windows, notifications in them (if enabled) and only survive a long as the application is open. This behavior is not any different from win xp through 10, Ubuntu, pop or any other Linux distro. The only place I've seen a panel as you intend is MacOS.

zenzen · 18 March 2023 10:56

Right click on the taskbar icon when you launch the program, and check the "Pin to Dock" option. This will create a permanent launcher on the panel, similar to how the default launchers for Firefox, Files and Software work.

system · 16 June 2023 10:56

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