Error when saving MLX file
I am using MATLAB R2022a in Ubuntu 20.04.5 LTS (Kernel 5.15), and whenever I try so save a .m script file I have no issues, however when I try to save a Live Editor file (.mlx), I get the next error: Unable to save file myFile.mlx java.lang.RuntimeException: Internal Exception in writing MLX file : Could not commit changes: copy failed: fl:filesystem:SystemError: /tmp/.bdae-ce03-39f3-5965.tmp invalid cross-device link I have tried with R2022b, but the problem persists. I have another Ubuntu station (Kernel 5.4) and it does write the file. I have read about similar errors depending on the Kernel version. Is there any solution that does not include downgrading the Kernel?
Prashant Kumar answered .
2025-11-20
This issue is a known problem with MATLAB R2022 releases on certain Linux kernels. Here are a couple of workarounds that don't involve downgrading your kernel:
Change MATLAB's Temporary Directory: The default temporary directory for MATLAB on Linux is /tmp/, which can cause issues with cross-device links. You can change the temporary directory to a new folder. Here's how you can do it in the MATLAB Command Window:
>> clear all
>> tempdir % Check the current temp directory
% ans = '/tmp/'
>> setenv('TMPDIR', '/path/to/new/tempdir') % Replace with your desired path
>> clear all
>> tempdir % Check the new temp directory
% ans = '/path/to/new/tempdir'
Use MATLAB Online: MATLAB Online provides access to MATLAB through a web browser using MathWorks-hosted resources. This can bypass the issue with saving MLX files on your local machine.