When I’m using Linux I use IBus to write Korean. A few days ago when I updated my Manjaro installation writing Korean stopped working. After booting everything looked fine. The IBus tray icon was there, switching languages with Win+Space seemed to work.
However, when I started to type the IBus icon suddenly changed and it wrote in English. I didn’t know that icon and it seemed strange. There was no error message. IBus just always switched to that icon and then wrote in the English alphabet.
Well, first I searched the Internet without success. I found only old entries which did no help. So, maybe there are logs? I couldn’t find any IBus log in /var/logs or something like that. However, the IBus man page told about a –verbose flag. So, I used that and tada, there were error messages:
[gamlor@gamlor-t470p ~]$ ibus-daemon --verbose -r &  13270 [gamlor@gamlor-t470p ~]$ (ibus-daemon:13170): GLib-WARNING **: 21:33:08.140: GChildWatchSource: Exit status of a child process was requested but ECHILD was received by waitpid(). See the documentation of g_child_watch_source_new() for possible causes. (ibus-engine-hangul:13296): IBUS-WARNING **: 21:33:08.224: org.freedesktop.IBus.Config.GetValue: GDBus.Error:org.freedesktop.DBus.Error.Failed: Config value [engine/hangul:on-keys] does not exist. (ibus-engine-hangul:13296): IBUS-WARNING **: 21:33:08.224: org.freedesktop.IBus.Config.GetValue: GDBus.Error:org.freedesktop.DBus.Error.Failed: Config value [engine/hangul:off-keys] does not exist. (ibus-daemon:13270): GLib-CRITICAL **: 21:33:08.229: g_variant_unref: assertion 'value != NULL' failed (ibus-ui-gtk3:13277): IBUS-WARNING **: 21:33:13.143: ibus_bus_call_sync: org.freedesktop.DBus.Properties.Get: GDBus.Error:org.freedesktop.DBus.Error.Failed: No global engine.
Oh…’assert failed’ doesn’t sound good. And whenever I tried to write Korean, the `bus_bus_call_sync…No global engine` message got printed. So I searched for that error message and found this Github issue. There is a work around: When configuring an Emoji selection key, the issue goes away. Strange. So, I did that and everything worked again. Here’s how: IBus Preference -> Emoji -> … Button -> Select a impossible key combination -> Add -> Done!