cairo-dock v3.6 crashes on Ubuntu 24.04 LTS

[sebma]

Hi,
I'm using Ubuntu 24.04.3 LTS and the cairo-dock-team/ppa Launchpad PPA to install cairo-dock v3.6 :

apt policy cairo-dock
cairo-dock:
Installed: 3.6.1-ppa1~ubuntu24.04
Candidate: 3.6.1-ppa1~ubuntu24.04
Version table:
*** 3.6.1-ppa1~ubuntu24.04 500
500 https://ppa.launchpadcontent.net/cairo-dock-team/ppa/ubuntu noble/main amd64 Packages
100 /var/lib/dpkg/status
3.4.1+git20201103.0836f5d1-1build3 500
500 http://fr.archive.ubuntu.com/ubuntu noble/universe amd64 Packages

Here is the output of the cairo-dock command on my system :

me : myPC @ local / Ubuntu 24.04.3 LTS : ~
cairo-dock &
[1] 610289
me : myPC @ local / Ubuntu 24.04.3 LTS : ~
Gtk-Message: 12:09:59.725: Failed to load module "xapp-gtk3-module"
warning :  (./src/implementations/cairo-dock-glx.c:_initialize_opengl_backend:129)
couldn't find an appropriate visual, trying to get one without Stencil buffer
(it may cause some little deterioration in the rendering) ...

============================================================================
Cairo-Dock version: 3.6.1
compiled date: 2025-11-02T19:40:57

Cairo-Dock was built with support for:
* GTK version:                  3.24
* X11:                          yes
* Wayland:                      yes
* GLX:                          yes
* EGL:                          yes
* gtk-layer-shell:              yes
* additional Wayland protocols: yes
* Wayfire IPC:                  yes

Cairo-Dock is currently running with:
* display backend:              X11
* window positioning:           legacy
* OpenGL:                       GLX
* taskbar backend:              X11
* desktop manager backend(s):   X11
* dock visibility backend:      default-wm-coords
* detected desktop environment: KDE
============================================================================

g_file_test: assertion 'filename != NULL' failed
g_file_test: assertion 'filename != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F1' (Applications Menu: Show/hide the Applications menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F2' (Applications Menu: Show/hide the quick-launch dialogue)
This shortkey is probably already used by another applet or another application
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
cairo_dock_create_surface_from_image: assertion 'cImagePath != NULL' failed
warning :  (./src/gldit/cairo-dock-class-manager.c:cairo_dock_set_data_from_class:2925)
app corresponding to this icon was already set!
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Super>L' (Log out: Lock the screen)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F12' (Log out: Show the logout menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/cairo-dock.c:_cairo_dock_intercept_signal:198)
Cairo-Dock has crashed (sig 11).
It will be restarted now.
Feel free to report this bug on https://github.com/Cairo-Dock/cairo-dock-core/issues to help improving the dock!
Couldn't guess if it was an applet's fault or not. It may have crashed inside the core or inside a thread
Gtk-Message: 12:10:01.442: Failed to load module "xapp-gtk3-module"
warning :  (./src/implementations/cairo-dock-glx.c:_initialize_opengl_backend:129)
couldn't find an appropriate visual, trying to get one without Stencil buffer
(it may cause some little deterioration in the rendering) ...

============================================================================
Cairo-Dock version: 3.6.1
compiled date: 2025-11-02T19:40:57

Cairo-Dock was built with support for:
* GTK version:                  3.24
* X11:                          yes
* Wayland:                      yes
* GLX:                          yes
* EGL:                          yes
* gtk-layer-shell:              yes
* additional Wayland protocols: yes
* Wayfire IPC:                  yes

Cairo-Dock is currently running with:
* display backend:              X11
* window positioning:           legacy
* OpenGL:                       GLX
* taskbar backend:              X11
* desktop manager backend(s):   X11
* dock visibility backend:      default-wm-coords
* detected desktop environment: KDE
============================================================================

g_file_test: assertion 'filename != NULL' failed
g_file_test: assertion 'filename != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F1' (Applications Menu: Show/hide the Applications menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F2' (Applications Menu: Show/hide the quick-launch dialogue)
This shortkey is probably already used by another applet or another application
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
cairo_dock_create_surface_from_image: assertion 'cImagePath != NULL' failed
warning :  (./src/gldit/cairo-dock-class-manager.c:cairo_dock_set_data_from_class:2925)
app corresponding to this icon was already set!
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Super>L' (Log out: Lock the screen)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F12' (Log out: Show the logout menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/cairo-dock.c:_cairo_dock_intercept_signal:198)
Cairo-Dock has crashed (sig 11).
It will be restarted now.
Feel free to report this bug on https://github.com/Cairo-Dock/cairo-dock-core/issues to help improving the dock!
Couldn't guess if it was an applet's fault or not. It may have crashed inside the core or inside a thread
Gtk-Message: 12:10:04.896: Failed to load module "xapp-gtk3-module"
warning :  (./src/implementations/cairo-dock-glx.c:_initialize_opengl_backend:129)
couldn't find an appropriate visual, trying to get one without Stencil buffer
(it may cause some little deterioration in the rendering) ...

============================================================================
Cairo-Dock version: 3.6.1
compiled date: 2025-11-02T19:40:57

Cairo-Dock was built with support for:
* GTK version:                  3.24
* X11:                          yes
* Wayland:                      yes
* GLX:                          yes
* EGL:                          yes
* gtk-layer-shell:              yes
* additional Wayland protocols: yes
* Wayfire IPC:                  yes

Cairo-Dock is currently running with:
* display backend:              X11
* window positioning:           legacy
* OpenGL:                       GLX
* taskbar backend:              X11
* desktop manager backend(s):   X11
* dock visibility backend:      default-wm-coords
* detected desktop environment: KDE
============================================================================

g_file_test: assertion 'filename != NULL' failed
g_file_test: assertion 'filename != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F1' (Applications Menu: Show/hide the Applications menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F2' (Applications Menu: Show/hide the quick-launch dialogue)
This shortkey is probably already used by another applet or another application
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
cairo_dock_create_surface_from_image: assertion 'cImagePath != NULL' failed
warning :  (./src/gldit/cairo-dock-class-manager.c:cairo_dock_set_data_from_class:2925)
app corresponding to this icon was already set!
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Super>L' (Log out: Lock the screen)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F12' (Log out: Show the logout menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/cairo-dock.c:_cairo_dock_intercept_signal:198)
Cairo-Dock has crashed (sig 11).
It will be restarted now.
Feel free to report this bug on https://github.com/Cairo-Dock/cairo-dock-core/issues to help improving the dock!
Couldn't guess if it was an applet's fault or not. It may have crashed inside the core or inside a thread
Gtk-Message: 12:10:08.284: Failed to load module "xapp-gtk3-module"
warning :  (./src/implementations/cairo-dock-glx.c:_initialize_opengl_backend:129)
couldn't find an appropriate visual, trying to get one without Stencil buffer
(it may cause some little deterioration in the rendering) ...

============================================================================
Cairo-Dock version: 3.6.1
compiled date: 2025-11-02T19:40:57

Cairo-Dock was built with support for:
* GTK version:                  3.24
* X11:                          yes
* Wayland:                      yes
* GLX:                          yes
* EGL:                          yes
* gtk-layer-shell:              yes
* additional Wayland protocols: yes
* Wayfire IPC:                  yes

Cairo-Dock is currently running with:
* display backend:              X11
* window positioning:           legacy
* OpenGL:                       GLX
* taskbar backend:              X11
* desktop manager backend(s):   X11
* dock visibility backend:      default-wm-coords
* detected desktop environment: KDE
============================================================================

warning :  (./src/cairo-dock.c:main:801)
showing the maintenance mode ...
warning :  (./src/cairo-dock.c:main:803)
end of the maintenance mode.
g_file_test: assertion 'filename != NULL' failed
g_file_test: assertion 'filename != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F1' (Applications Menu: Show/hide the Applications menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F2' (Applications Menu: Show/hide the quick-launch dialogue)
This shortkey is probably already used by another applet or another application
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
cairo_dock_create_surface_from_image: assertion 'cImagePath != NULL' failed
warning :  (./src/gldit/cairo-dock-class-manager.c:cairo_dock_set_data_from_class:2925)
app corresponding to this icon was already set!
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Super>L' (Log out: Lock the screen)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F12' (Log out: Show the logout menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/cairo-dock.c:_cairo_dock_intercept_signal:198)
Cairo-Dock has crashed (sig 11).
It will be restarted now.
Feel free to report this bug on https://github.com/Cairo-Dock/cairo-dock-core/issues to help improving the dock!
Couldn't guess if it was an applet's fault or not. It may have crashed inside the core or inside a thread
Gtk-Message: 12:10:15.783: Failed to load module "xapp-gtk3-module"
warning :  (./src/implementations/cairo-dock-glx.c:_initialize_opengl_backend:129)
couldn't find an appropriate visual, trying to get one without Stencil buffer
(it may cause some little deterioration in the rendering) ...

============================================================================
Cairo-Dock version: 3.6.1
compiled date: 2025-11-02T19:40:57

Cairo-Dock was built with support for:
* GTK version:                  3.24
* X11:                          yes
* Wayland:                      yes
* GLX:                          yes
* EGL:                          yes
* gtk-layer-shell:              yes
* additional Wayland protocols: yes
* Wayfire IPC:                  yes

Cairo-Dock is currently running with:
* display backend:              X11
* window positioning:           legacy
* OpenGL:                       GLX
* taskbar backend:              X11
* desktop manager backend(s):   X11
* dock visibility backend:      default-wm-coords
* detected desktop environment: KDE
============================================================================

warning :  (./src/cairo-dock.c:main:801)
showing the maintenance mode ...
warning :  (./src/cairo-dock.c:main:803)
end of the maintenance mode.
g_file_test: assertion 'filename != NULL' failed
g_file_test: assertion 'filename != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F1' (Applications Menu: Show/hide the Applications menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F2' (Applications Menu: Show/hide the quick-launch dialogue)
This shortkey is probably already used by another applet or another application
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_boolean: assertion 'key_file != NULL' failed
g_key_file_get_string: assertion 'key_file != NULL' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
gldi_object_ref: assertion 'pObject != NULL && pObject->ref > 0' failed
cairo_dock_create_surface_from_image: assertion 'cImagePath != NULL' failed
warning :  (./src/gldit/cairo-dock-class-manager.c:cairo_dock_set_data_from_class:2925)
app corresponding to this icon was already set!
cairo_dock_create_surface_from_image_simple: assertion 'cImageFile != NULL' failed
_cairo_dock_add_inhibitor_to_class: assertion 'pClassAppli != NULL' failed
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Super>L' (Log out: Lock the screen)
This shortkey is probably already used by another applet or another application
warning :  (./src/gldit/cairo-dock-keybinder.c:init_object:358)
Couldn't bind '<Control>F12' (Log out: Show the logout menu)
This shortkey is probably already used by another applet or another application
warning :  (./src/cairo-dock.c:_cairo_dock_intercept_signal:198)
Cairo-Dock has crashed (sig 11).
It will be restarted now.
Feel free to report this bug on https://github.com/Cairo-Dock/cairo-dock-core/issues to help improving the dock!
Couldn't guess if it was an applet's fault or not. It may have crashed inside the core or inside a thread
Sorry, Cairo-Dock has encoutered some problems, and will quit.

[1]+  Exit 1                  cairo-dock

Can you help ?

[dkondor]

Hi,

thanks for reporting! This looks like a bug in Cairo-Dock, but unfortunately, I don't see anything too specific about what might be the problem. The best way to diagnose would be to run Cairo-Dock in a debugger and record some diagnostics there.

To do this you would need to first install GDB -- you can just run sudo apt install gdb from a terminal.

Then from a terminal run:

gdb cairo-dock

This will start GDB with cairo-dock loaded and display GDB's prompt from now on. You can the run Cairo-Dock by:

run -T

(note: you can pass another command line arguments as well -- -T is necessary to disable Cairo-Dock's built-in crash handling)

When a crash happens, you will see the GDB prompt; run the following command:

bt

You will need to copy everything that is printed out and paste among triple backticks here. If the output does not fit in the terminal screen, you will need to keep pressing the ENTER key until you return to the GDB prompt.

After this, you can exit GDB with:

quit

(just answer y if it asks whether to terminate the Cairo-Dock process)

[sebma]

@dkondor Thanks for your reponse.

First gdb is asking me this, what do I do ? :

$ gdb cairo-dock
GNU gdb (Ubuntu 15.0.50.20240403-0ubuntu1) 15.0.50.20240403-git
Copyright (C) 2024 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from cairo-dock...

This GDB supports auto-downloading debuginfo from the following URLs:
<https://debuginfod.ubuntu.com>
Enable debuginfod for this session? (y or [n])

[dkondor]

You can just answer n (or just press ENTER, it's the default)

[sebma]

@dkondor Run run -T, now patenting for it to crash ...

[sebma]

@dkondor It crashed, here is the backtrace :

....
[New Thread 0x7fffe2ffd6c0 (LWP 1690255)]
[Thread 0x7fffe2ffd6c0 (LWP 1690255) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1690947)]
[Thread 0x7fffe2ffd6c0 (LWP 1690947) exited]

Thread 1 "cairo-dock" received signal SIGSEGV, Segmentation fault.
0x00007ffff63ba6f4 in pango_coverage_get () from /lib/x86_64-linux-gnu/libpango-1.0.so.0
(gdb) bt
#0  0x00007ffff63ba6f4 in pango_coverage_get () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#1  0x00007ffff63b46ef in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#2  0x00007ffff63b087a in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#3  0x00007ffff6623509 in ??? () at /lib/x86_64-linux-gnu/libpangoft2-1.0.so.0
#4  0x00007ffff63b4b73 in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#5  0x00007ffff63b5e3d in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#6  0x00007ffff63c9fae in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#7  0x00007ffff63bf08e in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#8  0x00007ffff6636a89 in ??? () at /lib/x86_64-linux-gnu/libpangocairo-1.0.so.0
#9  0x00007ffff63c8a75 in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#10 0x00007ffff63c95c8 in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#11 0x00007ffff63beb86 in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#12 0x00007ffff63bef82 in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#13 0x00007ffff63bf24f in pango_layout_get_size () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#14 0x00007ffff63cbdad in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#15 0x00007ffff63bf08e in ??? () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#16 0x00007ffff63c2d8e in pango_layout_get_pixel_extents () at /lib/x86_64-linux-gnu/libpango-1.0.so.0
#17 0x00007ffff7090f57 in cairo_dock_create_surface_from_text_full () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#18 0x00007ffff7047f7b in cairo_dock_load_icon_text () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#19 0x00007ffff7048c49 in gldi_icon_set_name () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#20 0x00007ffff704db8e in ??? () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#21 0x00007ffff70c0b47 in ??? () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#22 0x00007ffff7ed15c5 in ??? () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ffff7f30737 in ??? () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ffff7ed1f87 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007ffff73febc5 in gtk_main () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#26 0x00005555555654f5 in main ()
(gdb) 

Oh, btw, the following 2 lines are repeated over and over before the crash only with a different address inside the LWP parenthesis, here is an excerpt :

.....
[New Thread 0x7fffe2ffd6c0 (LWP 1510084)]
[Thread 0x7fffe2ffd6c0 (LWP 1510084) exited]
[New Thread 0x7fff552fa6c0 (LWP 1511871)]
[Thread 0x7fff552fa6c0 (LWP 1511871) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1524983)]
[Thread 0x7fffe2ffd6c0 (LWP 1524983) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1526320)]
[Thread 0x7fffe2ffd6c0 (LWP 1526320) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1537898)]
[Thread 0x7fffe2ffd6c0 (LWP 1537898) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1542251)]
[Thread 0x7fffe2ffd6c0 (LWP 1542251) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1557773)]
[Thread 0x7fffe2ffd6c0 (LWP 1557773) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1573241)]
[Thread 0x7fffe2ffd6c0 (LWP 1573241) exited]
[New Thread 0x7fff552fa6c0 (LWP 1574968)]
[Thread 0x7fff552fa6c0 (LWP 1574968) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1588693)]
[Thread 0x7fffe2ffd6c0 (LWP 1588693) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1604094)]
[Thread 0x7fffe2ffd6c0 (LWP 1604094) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1619537)]
[Thread 0x7fffe2ffd6c0 (LWP 1619537) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1634926)]
[Thread 0x7fffe2ffd6c0 (LWP 1634926) exited]
[New Thread 0x7fff552fa6c0 (LWP 1636658)]
[Thread 0x7fff552fa6c0 (LWP 1636658) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1650371)]
[Thread 0x7fffe2ffd6c0 (LWP 1650371) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1665798)]
[Thread 0x7fffe2ffd6c0 (LWP 1665798) exited]
[New Thread 0x7fffe2ffd6c0 (LWP 1681236)]
[Thread 0x7fffe2ffd6c0 (LWP 1681236) exited]

[dkondor]

Thanks for the update! It is still not that clear, but gives an idea about some things to look into.

Does this happen when you open a specific app / or when an app sets a new title (e.g. you navigate to a specific website in a browser)? (since the crash seems to be inside a function that updates icons based on apps' title, I'm wondering if there is a special case that we're not handling well)

[dkondor]

Also, could you share the value of the LANG environment variable, i.e. the output of

echo $LANG

in a terminal? Thanks!

[sebma]

Does this happen when you open a specific app / or when an app sets a new title (e.g. you navigate to a specific website in a browser)?

No idea yet, sorry.

Also, could you share the value of the LANG environment variable, i.e. the output of

echo $LANG

Sure, there it is :

$ echo $LANG
en_GB.UTF-8

[kleinerDrache]

same situation here........

Output from gdb:

#0  0x00007ffff7f25a40 in ??? () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ffff7f25b57 in g_variant_type_info_get_type_string () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff6b43b45 in ??? () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#3  0x00007ffff6b44584 in ??? () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007ffff6b43d2d in ??? () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007ffff6b4664b in g_dbus_message_to_blob () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007ffff6b373b5 in ??? () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007ffff6b382f2 in ??? () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#8  0x00007ffff6b384b7 in g_dbus_connection_send_message_with_reply () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#9  0x00007ffff6b4012e in ??? () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#10 0x00007ffff6b50b55 in ??? () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#11 0x00007ffff6b50d6c in g_dbus_proxy_call () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#12 0x00007ffff70b7dc2 in ??? () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#13 0x00007ffff70a3f30 in cairo_dock_launch_command_argv_full2 () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#14 0x00007ffff7075eed in gldi_app_info_launch () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#15 0x00007ffff7076506 in gldi_launch_desktop_app_info () at /usr/lib/x86_64-linux-gnu/libgldi.so.3
#16 0x00007ffff7c882fa in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007ffff7cb790c in ??? () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007ffff7ca8591 in ??? () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007ffff7ca87c1 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff7ca8883 in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007ffff7559d5c in gtk_widget_activate () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#22 0x00007ffff741ab86 in gtk_menu_shell_activate_item () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#23 0x00007ffff741afa1 in ??? () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#24 0x00007ffff72982f7 in ??? () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#25 0x00007ffff7ca86bd in ??? () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007ffff7ca87c1 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007ffff7ca8883 in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff7566bf4 in ??? () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#29 0x00007ffff7403390 in ??? () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#30 0x00007ffff7403f2a in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#31 0x00007ffff713f407 in ??? () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#32 0x00007ffff7198e2e in ??? () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#33 0x00007ffff7ed15c5 in ??? () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007ffff7f30737 in ??? () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007ffff7ed1f87 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ffff73febc5 in gtk_main () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#37 0x00005555555654f5 in main ()

Language settings : de_DE.UTF-8

Cairo-Dock crashes when i use Starter for Steam or AT-Launcher for Minecraft

sorry about my bad English ...... im native German

[dkondor]

Thanks for the additional info! This might be a different problem thought. Does this happen always (or at least reliably often) with these apps? In this case, would you be able to share their .desktop files? Likely they are under ~/.local/share/applications/

Also, would any of you be able to compile Cairo-Dock to get some more debug info about the problem?

[dkondor]

Actually, #213 will very likely fix your problem @kleinerDrache

Let me know if you would be able to test by compiling (either the branch there or applying the patch on top of 3.6.1) or if I should create a package on Launchpad.

If my thinking here is indeed correct, then this is separate from the original problem experienced by @sebma which seems more complicated

[kleinerDrache]

I think it would be better if you created a package; unfortunately, I don't have a tinkering system available at the moment, only my production system.

[dkondor]

Sure, I'll look into creating an experimental package with these fixes applied