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Does MATLAB support High DPI screens on Linux?

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I am running MATLAB on Linux on a high resolution 4K display. The menus, menu bar, etc are very small and the characters are difficult to read because of their small size. I have already changed the font size in the editor and command window, but I cannot find any way of changing the MATLAB program menu bar size.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 22 Jun 2018
MATLAB supports High DPI screens on Linux starting from R2017b.
Tuning a high-DPI Linux system requires two steps:
1. Setting the MATLAB scale factor
2. Calibrating the system's DPI
The MATLAB scale factor affects MATLAB desktop and the size/position of windows.
The system DPI determines the scale and font size of axes and labels.
The two tuning steps are described below:
1. To set the MATLAB scale factor, please execute the following commands in the MATLAB Command Window:
>> s = settings;s.matlab.desktop.DisplayScaleFactor
>> s.matlab.desktop.DisplayScaleFactor.PersonalValue = 1.5
Here the scale factor has been set to 1.5.
2. To calibrate the system's DPI to match the scale factor, please use the following terminal commands:
% xdpyinfo | grep resolution
resolution: 96x96 dots per inch
% xrandr --dpi 144
The DPI value chosen should be the resolution found with "xdpyinfo" multiplied by the MATLAB scale factor that was set. In the example, 96 × 1.5 = 144.
MATLAB must be restarted after Step 2.
In earlier releases than R2017b, high DPI screens on Linux is not supported.
The possible workarounds mentioned below may help improve the visual appearance:
(a) You can increase font sizes of text in the different windows. However, the icon or font size of the toolbar cannot be changed.
(b) You can switch the high DPI monitor to a lower screen resolution, for example 1920x1080 or as preferred.
(c) You can connect a lower resolution monitor and use MATLAB on that monitor.
Yang Liu
Yang Liu on 3 Jun 2021
Are you using newer versions like R2021a? I believe it is a bug in R2021a.

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More Answers (1)

Rajat Sewal
Rajat Sewal on 19 Apr 2021
I feel for you my friend. The fix suggested by Mathworks did work for me. However, there is something else you can try (I have used this fix myself). You did not mention your OS platform. If you are on Ubuntu, then try this: Settings - Displays -> Scale: select 200% instead of 100%
This will magnify the matlab session.
You should adjust the Resolution to 3840x2160 first, which is UHD.
I hope this helps.
Rajat Sewal
Rajat Sewal on 19 Apr 2021
I completely agree that the changes will stick only after your suggestions. In my case I have a local installation under my username. Thanks for the clarification.

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