Compose Key - works, but doesn't survive reboot

[Win7refugee]

Following this thread, I used this command

setxkbmap -option compose:ralt

to set Right Alt as the Compose Key. It works! But it doesn’t survive reboot…

Anyone knows how to make it permanent?

[Win7refugee]

The OP in this thread was heading in the almost right direction. It seems that making the Compose Key persistent on Lubuntu requires editing:

Blockquote
/etc/X11/xorg.conf.d/10-keyboard.conf

The file itself warns against being edited, saying in bright red letters: “# Read and parsed by systemd-localed. It’s probably wise not to edit this file manually too freely.”

Gentoo wiki where I initially found how to do it also says:

Blockquote
For sake of sanity, it is advised to use of a proper desktop environment with its own keyboard layout management.

Unfortunately, I was unsuccessful finding the GUI option in Lubuntu (did find it in Ubuntu though) or in its manual. I assume that it does exist and I just can’t find it. Could someone please point me to a place where this can be done without manually editing system files in the future?

In the meantime, the Arch Wiki provided me with an easy-to-follow example and my 10-keyboard.conf file now looks like this:

Blockquote
Section “InputClass”
Identifier “system-keyboard”
MatchIsKeyboard “on”
Option “XkbLayout” “us”
Option “XkbOptions” “compose:ralt”
EndSection

And it works! My Right Alt now serves as the Compose Key and the configuration persists after a reboot.