I did some research on this issue. 1. Desktop file is created by a script "add-calamares-desktop-icon" which is launched by /etc/xdg/autostart/calamares-desktop-icon.desktop Both files belong to the package calamares-settings-debian
2. "X-GNOME-Autostart-Phase" on calamares-desktop-icon.desktop breaks script execution for KDE Plasma (at least on Debian 12). After deleting/commenting this key in the file /etc/xdg/autostart/calamares-desktop-icon.desktop and re-entering the live session, the file was successfully created. For more details, please see https://github.com/systemd/systemd/issues/18791 , https://gitlab.freedesktop.org/xdg/xdg-user-dirs/-/merge_requests/10 --- Jonathan, what is your opinion on removing the "X-GNOME-Autostart-Phase" key from the autostart file? I believe that it's a safe solution that won't affect other Desktop Environments (especially GNOME, which doesn't support desktop icons). An alternative solution, systemd patch backport ( https://github.com/systemd/systemd/pull/26379), seems to be overkill for this issue.
