Hmmm... I now realize:
> default-display-manager: /usr/bin/sddm I use GDM3 without problem for ibus. I hear KDE user are suffering strange IM problem with uim too. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862558 KDE used to work without problem. So something changed on sddm side how it run's its start up. Maybe how sddm is started by systemd. One user reported that by SSH into the problematic system via SSH, he sees: 1861 tty2 Rl+ 0:09 ksplashqml Breeze --pid 1871 tty2 Sl+ 0:00 \_ /usr/lib/mozc/mozc_server 1877 tty2 Sl+ 0:00 \_ /usr/lib/x86_64-linux-gnu/uim/uim-candwin-qt5 -v Strange thing is why ksplashqm calling IM? He killed /usr/lib/mozc/mozc_server and got to log into system. The way this bug is happening, this looks like a bug on plasma-workspace or mozc. (This looks like mozc starting without regard to the other program. This may help some mozc user by letting them to skip configuration but certainly this is non-optimal way.) Regards, Osamu