Right Alt is allowed as compose key. However locale settings affect the combinations used to compose characters. I think that default setting should be en_US.UTF-8 so the combinations are listed in /usr/share/X11/locale/en_US.UTF-8/compose.
If you experience other problems, feel free to report. Thanks -- Compose key + XKB do not work correctly in KDE https://bugs.launchpad.net/bugs/93397 You received this bug notification because you are a member of Kubuntu Team, which is a bug contact for kdebase in ubuntu. -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs