Fatal error starting Matlab 1. time in Ubuntu 25.04

Starting Matlab in CLI on an Ubuntu 25.04 with 16 Gb of RAM I get this:

MATLAB is selecting SOFTWARE OPENGL rendering.

Fontconfig warning: "/usr/share/fontconfig/conf.avail/05-reset-dirs-sample.conf", line 6: unknown element "reset-dirs"

library initialization failed - unable to allocate file descriptor table - out of memory

MATLAB is exiting because of fatal error.

I have installed to /home/pgl/matlab as a user (not su).

What is the issue?

Best

Pål

Answer 1

[Star Strider]

From the Platform Roadmap documentation, R2023a only supports Ubuntu 22.04 LTS. The 25.04 release is not listed for any MATLAB version.

To resolve this definitively, Contact Support. It would be appropriate to iinclude the URL of this thread in your help request message.

[Pål Larsson]

Thank you for your reply

With the help of Gemini, I came around the issue. There are two parts:

More open files needed: uname -n 4096

Avoid the i965 Opengl driver.

I made a batch to include these lines, and now it works. Are the any plans to put this into the software? Are there better solutions?

Best

Pål

[Star Strider]

My pleasure!

'Are the any plans to put this into the software? Are there better solutions?'

Ask MathWorks about that.

The opengl function has been deprecated (although it still should work in R2023a), and something called WebGL is now used in its place. Beginning with R2022a, the opengl documentation notes: The opengl function runs without warning, but the Code Analyzer indicates that opengl will be removed in a future release. I previously had problems with WebGL (Ubuntu 24.04), however Ubuntu updates corrected that.

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