Hi Antoine,
It seems that Simulink is displaying dark layout with incorrect resolution. However, the same problem does not arise in Simulink when launched as a root user.
The reason for such an unexpected behaviour would be due to some user preferences that needs to be changed. The simplest way to resolve this issue is to launch Simulink as a root user. If sudo privileges are denied for some users, you can try referring to the following MATLAB Answer that describes how MATLAB supports high DPI screens on Linux:
https://www.mathworks.com/matlabcentral/answers/406956-does-matlab-support-high-dpi-screens-on-linux
You can also create a script for setting the display scaling as follows:
>> s = settings;s.matlab.desktop.DisplayScaleFactor;
>> s.matlab.desktop.DisplayScaleFactor.PersonalValue = 1;
>> quit;
Then you can use the MATLAB startup option '-r' to run this script by typing the following in the terminal:
matlab -r "<scriptname>"
This will set the display scaling and quit MATLAB. After MATLAB has quit, you can then restart again from the terminal:
matlab
The following documentation page provides more details on the startup option ‘-r’: https://www.mathworks.com/help/matlab/ref/matlablinux.html#buknt9_-3
You may also have a look at the following MATLAB Answer detailing the scaling issue in Windows:
I hope this helps!
