Ubuntu 22.04 upgrade from 20.04 and xmonad reinstall, before you upgrade backup your data to an external drive To upgrade to ubuntu 22.04 run the following command sudo do-release-upgrade -d --allow-third-party after upgrading to 22.04 you need to install the gnome-control-center which is called settings in the application launcher, ubuntu seems to remove the settings app during the upgrade which is used to configure settings like wifi, sound etc to install the gnome-control-center (settings app) run the following command after upgrading sudo apt install gnome-control-center ubuntu will install a snap version of firefox during the upgrade to remove the firefox snap run the following command sudo snap remove firefox to reinstall xmonad using the stack install read the following document https://github.com/NapoleonWils0n/cerberus/blob/master/xmonad/xmonad-ubuntu-stack-install.org