Slow initialization at startup during the "Ready" step

I have installed Matlab R2024b on a Kubuntu 24.10 system. I installed only Matlab without an Add-ons and had no trouble during installation. Starting the program results in a long initialization time. I tracked the initialization process with the -timing flag. This results in the following output:

    MATLAB Startup Performance Metrics (In Seconds)

total   item     gap      description
=========================================================
 0.47   0.47    0.00   MATLAB script                           
 0.66   0.20   -0.00   main                                    
 0.71   0.05    0.00   Session Initialize                      
 1.99   0.01    1.27     Toolbox cache load Start              
 1.99   0.44    0.84   Session Initialize                      
 2.33   0.34    1.99   cachepath                               
 2.50   0.11    2.38   LM Startup                              
 2.60   0.10    0.00   splash                                  
 3.03   0.20    0.23     Constant Initialization               
 3.33   0.73    0.00   Engine Startup                          
 3.52   0.20    0.00      InitSunVM                            
 5.01   1.43    0.06      PostVMInit                           
 5.01   1.68    0.00     mljInit                               
 5.72   0.71    0.00     StartDesktop                          
 5.72   2.39    0.00   Java initialization                     
 5.72   0.00    0.00   psParser                                
 5.72   0.00    0.00   Toolbox cache join                      
 5.74   0.01    0.00   Package Registry initialization         
 6.17   0.21    0.22   matlabpath                              
 7.08   0.19    0.72   matlabrc                                
 7.09   0.00    0.00   Startup File                            
 9.27   3.55    5.72     Init Desktop                          
217.84  212.12    5.72   Ready                                   
=========================================================
Items shown account for 99.8% of total startup time

As visible, the last step consumes most of the time. Running the program bare with the -nojvm flag results in a quick start (3.92 s) . I already tried to increase the Java Memory heap space, as suggested in https://de.mathworks.com/matlabcentral/answers/1956139-slow-java-initialization-during-startup and tried several solutions from https://de.mathworks.com/matlabcentral/answers/92566-why-does-matlab-get-stuck-in-the-initializing-or-busy-state-or-take-a-long-time-to-start without improving the starting time.

Thanks in advance for any ideas how to resolve this issue.

Answer 1

[Image Analyst]

I don't think it should take over 3 minutes to start MATLAB. On my old, slow, severely memory- limited 8 GB Windows computer, it takes 50 seconds to launch R2024b. I'd do what it says in the FAQ:

https://matlab.fandom.com/wiki/FAQ#After_installation,_MATLAB_crashes_or_gives_an_error_message_when_I_try_to_run_MATLAB.

Let us know what the solution turned out to be.

[Image Analyst]

OK and it's been 2 days now. I assume you acted upon my suggestion. What turned out to be the solution?

[Maximilian Pohle]

Thanks for your reply.

I was hoping that someone else had encountered the same issue and had a solution. It seems I need to contact the support.

[Image Analyst]

Yes, since I believe it's an installation issue, the telephone help should be free. So why wait? There is no reason to wait. Simply call them.

Answer 2

[Guillaume Lion]

Hi,

I’m experiencing the same issue on Ubuntu 24.10, but it does not occur on Ubuntu 24.04.

MATLAB Startup Performance Metrics (In Seconds)

total item gap description

=========================================================

0.46 0.46 0.00 MATLAB script

0.64 0.18 0.00 main

0.67 0.03 0.00 Session Initialize

1.93 0.10 1.16 Toolbox cache load Start

1.93 0.46 0.80 Session Initialize

2.16 0.23 1.93 cachepath

10.78 8.64 2.13 LM Startup

10.79 0.01 0.00 splash

11.12 0.15 0.18 Constant Initialization

11.24 0.45 0.00 Engine Startup

11.35 0.11 0.00 InitSunVM

12.37 0.97 0.05 PostVMInit

12.37 1.13 0.00 mljInit

12.83 0.46 0.00 StartDesktop

12.83 1.59 0.00 Java initialization

12.84 0.00 0.00 psParser

12.84 0.00 0.00 Toolbox cache join

12.85 0.01 0.00 Package Registry initialization

13.50 0.42 0.23 matlabpath

14.00 0.08 0.41 matlabrc

14.00 0.00 0.00 Startup File

15.62 2.78 12.83 Init Desktop

154.62 141.79 12.83 Ready

=========================================================

Items shown account for 99.8% of total startup time

Did you find a solution ?

Regards.

[Image Analyst]

@Guillaume Lion, @Maximilian Pohle presumably called the Mathworks and found a solution but he didn't update us. @Maximilian Pohle, can you post the solution back here in Answers? It can help others with the same problem.

@Guillaume Lion, if he doesn't give us his solution, then you can call the Mathworks yourself and ask for installation help. Please post your problem's resolution back here to help other people.

[Guillaume Lion]

Thx @Image Analyst

It seems that the issue also affects the "Search Documentation" tool... It takes just as long to open the help page.

[Image Analyst]

@Guillaume Lion so how did the Mathworks solve it when you called them?