wingpanel keeps resetting whenever I click an application

[Afadinsro]

Whenever I click an application like sound, keyboard layout setting, power,notification, all power options, apps menu (also happens with finger scroll) etc. However, increasing volume, typing out app name and selecting wifi network does not result in any reset. What is the problem here?

[Zisu Andrei (matzipan)]

Hey,

Can you please run "killall -9 wingpanel && wingpanel" from your command line, reproduce the issue and post back the output you get?

Thanks.

[Afadinsro (mills-josef)]

Here you go:

[INFO 15:11:19.857859] Application.vala:155: System Panel version: 2.0.1
[INFO 15:11:19.857903] Application.vala:157: Kernel version: 4.4.0-47-generic
[FATAL 15:11:19.980154] wingpanel_widgets_overlay_icon_set_main_icon_name: assertion 'self != NULL' failed
[FATAL 15:11:19.980573] wingpanel_widgets_overlay_icon_set_main_icon_name: assertion 'self != NULL' failed
[15:11:20.072308 GLib-GIO-Critical] g_file_get_child: assertion 'G_IS_FILE (file)' failed
[15:11:20.072338 GLib-GIO-Critical] g_file_query_exists: assertion 'G_IS_FILE(file)' failed
[15:11:20.072343 GLib-GIO-Critical] g_file_get_child: assertion 'G_IS_FILE (file)' failed
[15:11:20.072348 GLib-GIO-Critical] g_file_query_exists: assertion 'G_IS_FILE(file)' failed
[15:11:20.072355 Critical] gee_abstract_collection_get_size: assertion 'self != NULL' failed
[15:11:20.072366 Warning] Theme.vala:508: Currently selected gtk+ theme 'elementary' does not provide a dock theme, fallback to the built-in defaults!
[15:11:20.279275 GLib-Critical] g_hash_table_get_keys: assertion 'hash_table != NULL' failed
[FATAL 15:11:20.378207] [AccountsService] act_user_get_user_name: assertion 'ACT_IS_USER (user)' failed
[15:11:20.508280 Warning] [DesktopFileInfo] Unable to create AppInfo
[15:11:20.517507 Warning] [DesktopFileInfo] Unable to create AppInfo
[15:11:20.517824 Warning] [DesktopFileInfo] Unable to create AppInfo
[15:11:20.540576 Warning] [DesktopFileInfo] Unable to create AppInfo
[15:11:20.575724 Warning] [DesktopFileInfo] Unable to get exec for Other

** (process:8680): CRITICAL **: string_contains: assertion 'self != NULL' failed
[15:11:58.474087 GLib-GObject-Warning] cannot register existing type 'GdkWindow'
[15:11:58.474163 Gdk-Warning] /build/gtk+2.0-KsZKkB/gtk+2.0-2.24.30/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window
[15:11:58.474227 GLib-GObject-Warning] cannot register existing type 'GdkWindow'
[15:11:58.474301 Gdk-Warning] /build/gtk+2.0-KsZKkB/gtk+2.0-2.24.30/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window
[ERROR 15:11:58.475419] [Gdk] The program 'wingpanel' received an X Window System error.This probably reflects a bug in the program.The error was 'BadWindow (invalid Window parameter)'. (Details: serial 9239 error_code 3 request_code 20 (core protocol) minor_code 0) (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.)
Trace/breakpoint trap (core dumped)

[Marcus Wichelmann (l-admin-3)]

I know that X error from some race-conditions or access of gtk ressources across multiple threads. It might be related to something like that.