HOWTO force monitor resolution on mxlinux

After recent upgrade, MX Linux could no longer detect my Viewsonic 22 inch monitor.

Due to unknown, the system therefore set the display to a very primitive resolution - VGA 1024x768 (4:3).

According to the monitor spec (from google), natively it should support 1680x1050 (16:10).

run command:

$ cvt 1680 1050

# 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz

Modeline "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync

Add the native mode to display port 0, which is how I connect my monitor:

xrandr --newmode "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync

xrandr

xrandr --addmode DisplayPort-0 1680x1050_60.00

If want to config it every time log in, append the following to .profile

xrandr --newmode "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync

xrandr --addmode DisplayPort-0 1680x1050_60.00

#xrandr --output DisplayPort-0 --off --output DVI-0 --mode 2048x1536_60.00 --pos 0x0 --rotate normal --output HDMI-0 --off

xrandr --output DisplayPort-0 --mode 1680x1050_60.00 --pos 0x0 --rotate normal