Package: ibus Version: 1.5.14-2 File: /etc/dconf/db/ibus.d/00-upstream-settings
# ls -l /etc/dconf/db/ibus.d/ -rw-r--r-- 1 root root 90 03-08 14:28 10-jidanni # cat /etc/dconf/db/ibus.d/10-jidanni [desktop/ibus/panel] custom-font='Sans 20' use-custom-font=true # dconf update # su - nobody -c 'HOME=/tmp/xxx ibus-setup' Here we see the above two settings are ignored. OK maybe # Instead create your own file next to it with a higher numbered prefix, means /etc/dconf/db/ibus.d/10-upstream-settings result: nope. Conclusion: all settings are hardwired in and dconf stuff is totally ignored.