Why do I get an error "Can't create UI because there is no display connection" when running certain Model Advisor checks on a headless Linux machine?

I have a script that calls the Advisor.Application class to pass a JSON Config file and run the ModelAdvisor. Inside my JSON rules, I have a bunch of Simulink Design Verifier and Embedded Coder rules enabled. I'm running the scriptusing the command

matlab -batch "doModelAdvisorCheck"

to run matlab in batch mode.

However, the Model Advisor report contains a bunch of failures with the following description:

Error occurred during model compile.

Can't create UI because there is no display connection

Since I'm using MATLAB on a headless Continuous Integration Agent, how do I get around this UI failure if I have no display/monitor connected to that machine? 

I try to -batch and -nodesktop startup options, but to no avail.

Answer 1

[MathWorks Support Team]

The issue occurs during model compilation when the checks are run using Advisor.Application(). 

Our recommendation is to use

ModelAdvisor.run()

instead of the app. The ModelAdvisor.run API is a more stable option for this purpose.

For example:

 results = ModelAdvisor.run(myModelName,'Configuration',myConfigFile);
 myMAResultStruct = struct(...
            'Passed',results{1}.numPass,...
            'Failed',results{1}.numFail,...
            'NotRun',results{1}.numNotRun,...
            'Warning',results{1}.numWarn,...
            'Justified',results{1}.numJustified);

Please note:

The use of Embedded Coder and Simulink Design Verifier in automation servers requires the use of the Client Access License. More information is available here:

https://www.mathworks.com/solutions/enterprise-it-systems/ci-cd.html