.bashrc

alias 1920='echo Xft.dpi: 144 | xrdb; xrandr --output screen --mode 1920x1080; i3-msg restart'
alias 2560='echo Xft.dpi: 192 | xrdb; xrandr --output screen --mode 2560x1600; i3-msg restart'

sxrc

#!/bin/sh
display="${DISPLAY/:/}"

case "$display" in
    [8-9])
        xrandr --newmode 1920x1080 0 1920 0 0 0 1080 0 0 0
        xrandr --addmode screen 1920x1080
        ;;
esac

if [ "$display" = 9 ]; then
    xrandr --output screen --mode 1920x1080
fi

case "$display" in
    [1-6] | 9)
        dpi=144
        ;;
    8)
        dpi=192
        ;;
esac

echo Xft.dpi: "$dpi" | xrdb

systemctl --user start x11vnc@"$display"

mkdir -p "$XDG_RUNTIME_DIR"/i3 && exec i3

x11vnc-wrapper

#!/bin/bash
port=5900
if [ "$1" != 8 ]; then
    let port+="$1"
    if [ "$port" -eq 5900 ]; then
        port=5908
    fi
fi
exec x11vnc -rfbport "$port" -rfbportv6 "$port" -nevershared -forever -repeat -capslock -skip_lockkeys -skip_keycodes 187,188

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[Unit]
Description=x11vnc-%i
ConditionPathExists=%T/.X11-unix/X%i
PartOf=xvfb@%i.service
After=xvfb@%i.service

[Service]
Environment=DISPLAY=:%i XAUTHORITY=%t/xauthority
ExecStart=/usr/local/bin/x11vnc-wrapper %i
SuccessExitStatus=2 3

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[Unit]
Description=Xvfb-%i

[Service]
ExecStart=/usr/bin/bash -lc 'Xvfb-start :%i -screen 0 2560x1600x24'

[Install]
WantedBy=default.target

https://github.com/tomty89/sx/tree/Xvfb-start