HiDPI configuration of i3-wm in ManjaroLinux

Intro.

I installed i3 tiling window manager on Manjarolinux ( xfce edition). It was required to configure HiDPI manually.

FYI, if you are going to install ManjaroLinux from scratch, you can install Manjaro-i3 edition.

Environment ManjaroLinux 17 ( xfce was used previously) i3 4.15 (a.k.a. i3-wm ) 4k single monitor Problem

To configure HiDPI (scaling) correctly in i3-wm .

Solution

Write the following line to the file, ~/.Xresources . The dpi value can be adjusted as you want.

Xft.dpi: 144

Make sure that the file is loaded in ~/.xinitrc . For example, my default .xinitrc file was like below.

#!/bin/bash # # ~/.xinitrc # # Executed by startx (run your window manager from here) userresources=$HOME/.Xresources usermodmap=$HOME/.Xmodmap sysresources=/etc/X11/xinit/.Xresources sysmodmap=/etc/X11/xinit/.Xmodmap SESSION=${1:-xfce} # merge in defaults and keymaps if [ -f $sysresources ]; then xrdb -merge $sysresources fi if [ -f $sysmodmap ]; then xmodmap $sysmodmap fi if [ -f "$userresources" ]; then xrdb -merge "$userresources" fi if [ -f "$usermodmap" ]; then xmodmap "$usermodmap" fi # start some nice programs if [ -d /etc/X11/xinit/xinitrc.d ] ; then for f in /etc/X11/xinit/xinitrc.d/?*.sh ; do [ -x "$f" ] && . "$f" done unset f fi get_session(){ local dbus_args=(--sh-syntax --exit-with-session) case "$SESSION" in awesome) dbus_args+=(awesome) ;; bspwm) dbus_args+=(bspwm-session) ;; budgie) dbus_args+=(budgie-desktop) ;; cinnamon) dbus_args+=(cinnamon-session) ;; deepin) dbus_args+=(startdde) ;; enlightenment) dbus_args+=(enlightenment_start) ;; fluxbox) dbus_args+=(startfluxbox) ;; gnome) dbus_args+=(gnome-session) ;; i3|i3wm) dbus_args+=(i3 --shmlog-size 0) ;; jwm) dbus_args+=(jwm) ;; kde) dbus_args+=(startkde) ;; lxde) dbus_args+=(startlxde) ;; lxqt) dbus_args+=(lxqt-session) ;; mate) dbus_args+=(mate-session) ;; xfce) dbus_args+=(xfce4-session) ;; openbox) dbus_args+=(openbox-session) ;; *) dbus_args+=("$SESSION") ;; esac echo "dbus-launch ${dbus_args[*]}" } exec $(get_session)

Reboot the system and confirm your display output.

Reference https://unix.stackexchange.com/a/413238 According to the reference, i3 get the dpi value from Xft.dpi since version 4.13.