HiDPI高分屏缩放问题
based on Linux mint 19.2
add custom resolution
make and edit nano ~/.xprofile
#!/bin/sh
# 2k display
xrandr --newmode "2560x1440_60.00" 312.25 2560 2752 3024 3488 1440 1443 1448 1493 -hsync +vsync
xrandr --addmode DP-1 "2560x1440_60.00
1.5x scaling
run following command
dconf write /org/cinnamon/desktop/interface/scaling-factor 'uint32 2'
dconf write /org/gnome/desktop/interface/scaling-factor 'uint32 2'
dconf write /org/cinnamon/active-display-scale 1.5
还原1.0缩放
0 为 auto，1 为 1.0x。
dconf write /org/cinnamon/desktop/interface/scaling-factor 'uint32 1'
dconf write /org/gnome/desktop/interface/scaling-factor 'uint32 1'
dconf write /org/cinnamon/active-display-scale 1
部分Qt程序的缩放可以手动设置export QT_AUTO_SCREEN_SCALE_FACTOR=0，写在~/.bashrc 中。
# Change window scaling for Qt-based programs
export QT_AUTO_SCREEN_SCALE_FACTOR=0
export QT_SCALE_FACTOR=1