本人筆記本為1920x1080，在win10下還好，可以調整，但是到了ubuntu下設置GNOME的scaling factor不管用，于是參考一波Matlab論壇，找到了答案。請注意Matlab版本只有2017b及以后的版本才能使用此方法，如果版本過低，請先升級。

MathWorks suggested the following procedure, which works well for me (R2017b). Quoting from their email:

Tuning a high-DPI Linux system requires two steps

Setting the MATLAB scale factor

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. To set the MATLAB scale factor, please use the following MATLAB commands:

>> s = settings;s.matlab.desktop.DisplayScaleFactor

>> s.matlab.desktop.DisplayScaleFactor.PersonalValue = 1.5

To calibrate the system DPI to match the scale facto, 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.

做完這些，瞬間感覺不一樣了

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