Gtk-Warning while starting MATLAB on Fedora 40

Hi, while starting MATLAB, I get following warnings:

(MATLAB:59226): Gtk-WARNING **: 22:49:50.611: Unable to locate theme engine in module_path: "adwaita",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.611: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.612: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.612: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.612: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.612: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.612: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.612: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.613: Unable to locate theme engine in module_path: "murrine",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.614: Unable to locate theme engine in module_path: "pixmap",

(MATLAB:59226): Gtk-WARNING **: 22:49:50.614: Unable to locate theme engine in module_path: "adwaita",

I installed gtk-lib-devel packages but it did not solve this problem. Be aware that MATLAB starts without problem.

I am on Fedora 40 with Intel i5 1235U and Iris graphics.

Answer 1

[Gojo]

Hey Ahmet,

I believe that you are recieving these warnings because the Gtk modules are not being loaded. Please check if you are getting a message similar to the following one:

Gtk-Message: 23:28:11.640: Failed to load module "appmenu-gtk-module"

You can refer to the below mentioned MATLAB Answers post to check the complete error message:

https://www.mathworks.com/matlabcentral/answers/1465524-matlab-on-linux-failed-to-load-module-appmenu-gtk-module?s_tid=answers_rc1-1_p1_BOTH

The warnings that you are receiving are informational and have no effect on the functionality of MATLAB. For supressing these warnings, you need to install the missing Gtk module as mentioned in the Workaround section of the following bug report:

https://in.mathworks.com/support/bugreports/details/1995075#:~:text=the%20following%20commands%3A-,Red%20Hat%20distributions%20(including%20CentOS%20and%20Fedora),-yum%20install%20libcanberra

If the issue persists, I suggest you to create a Service Request for the same here: https://www.mathworks.com/support/contact_us.html?s_tid=hc_trail

I hope this helps in resolving the issue!