HiDPI Shell Variables

MAXX_SCREEN_SCALE_FACTORS ³  

Define a list of screen id with effective scaling factor separated by ‘:’ (like PATH).

For example, the screen 0 had a scale factor of 1.0 and screen 2 a factor of 2.2. Therefor the MAXX_SCALE value would be:  0/1.0:1/2.2

GDK_SCALE ^{1 2}

Defines GTK+3 UI widgets scale factor.  1 means no widget scaling.

GDK_DPI_SCALE ^{1 2}

Defines GTK+ 3 text scaling factor. 1 means no text scaling.

QT_AUTO_SCREEN_SCALE_FACTOR ^{1 2}

Controls QT Auto Scaling based on HiDPI. 0 means disabled.

QT_SCALE_FACTOR ^{1 2}

QT_SCALE_FACTOR scales fonts,  1 means no text scaling.

QT_SCREEN_SCALE_FACTORS ^{1 2}

QT_SCREEN_SCALE_FACTORS does not scale fonts. 1 means no text scaling.