Fcitx 5 is the successor of Fcitx 4. Fcitx 5 have many improvements compared to Fcitx 4, for example better Wayland support and the new addon-loader. And from 4 to 5, it isn't a routine update, they have different filesystem structure, different configuration methods and etc., migrating your data from 4 to 5 is not easy right now. So just take Fcitx 5 as a brand new IME.
|fcitx5-anthy||Japanese IME based on anthy|
|fcitx5-autostart||scripts used for autostart and environment|
|fcitx5-chinese-addons||Chinese IME based on libime|
|fcitx5-configtool||GUI configuration tools|
|fcitx5-gtk||IM modules need by GTK programs|
|fcitx5-hangul||hangul Korean IME|
|fcitx5-kkc||kkc Japanese IME|
|fcitx5-lua||lua addons support|
|fcitx5-m17n||IMEs based on m17n|
|fcitx5-migrator||migration tool for migrating from fcitx4|
|fcitx5-mozc||mozc Japanese input|
|fcitx5-qt||QT support for other components of fcitx5|
|fcitx5-qt-module||QT IM modules for fcitx5|
|fcitx5-rime||rim Chinese IME|
|fcitx5-skk||skk Japanese IME|
|fcitx5-table-extra||additional Chinese tables|
|fcitx5-table-other||additional input table for various language|
|kcm-fcitx5||kcm configuration tools|
Install main program and config tool, IM modules, and choose a language engine you like.
Make fcitx5 systemwide default IME
Install package fcitx5-autostart. Logout and re-login. Avoid using im-chooser and fcitx5-autostart simultaneously as this will cause log spam.
You need to select Fcitx 5 as your virtual keyboard. To add the input method of your choice, open System Settings, click on Input Devices, click Virtual Keyboard, click Fcitx 5, and click Apply.
You will also need to set Fcitx 5 as the Input Method Engine in imsettings. To do this, run the im-chooser command in a terminal to open the program. When it opens, select Fcitx 5.
To add the input method of your choice, click on Regional Settings, click on Input Method, and click Add Input Method... Once you've added your input method, click Apply to save the changes.
Log out and log back in again. You can test your new input method by right-clicking the keyboard icon in your system tray and selecting the input method. The keyboard icon will only be displayed if Fcitx 5 is currently running. It's a good idea to test your input method in a few programs like Firefox, Kate, and in your terminal to ensure it is working correctly across programs that use different graphical toolkits.
If you still can't use your new input method and you're certain Fcitx 5 is running, you may need to reboot your computer for the changes to fully take effect.
If you're still facing issues, run fcitx5-diagnose in your terminal. This will detect the most common problems users face with Fcitx and is a good place to start troubleshooting.
Enable specific input method
This can be done with fcitx5-config-qt, which is included in fcitx5-configtool package, simply select a candidate and double-check on it. Or you could edit $XDG_CONFIG_HOME/fcitx5/profile by yourself.
Tips: if you are using Gnome, Gnome extension kimpanel is highly recommended.