fcitx input method does not work on Xubuntu 16.04 - Ask Ubuntu

i'm using xubuntu 16.04. although active fcitx input method (unikey , hangul), not works application.

here fcitx-diagnose

# system info: 1.  `uname -a`:          linux 4.4.0-45-generic #66-ubuntu smp wed oct 19 14:12:37 utc 2016 x86_64 x86_64 x86_64 gnu/linux  2.  `lsb_release -a`:          no lsb modules available.         distributor id: ubuntu         description:    ubuntu 16.04 lts         release:    16.04         codename:   xenial  3.  `lsb_release -d`:          description:    ubuntu 16.04 lts  4.  `/etc/lsb-release`:          distrib_id=ubuntu         distrib_release=16.04         distrib_codename=xenial         distrib_description="ubuntu 16.04 lts"  5.  `/etc/os-release`:          name="ubuntu"         version="16.04 lts (xenial xerus)"         id=ubuntu         id_like=debian         pretty_name="ubuntu 16.04 lts"         version_id="16.04"         home_url="http://www.ubuntu.com/"         support_url="http://help.ubuntu.com/"         bug_report_url="http://bugs.launchpad.net/ubuntu/"         ubuntu_codename=xenial  6.  desktop environment:      desktop environment `xfce`.  7.  bash version:          bash_version='4.3.42(1)-release'  # environment: 1.  display:          display=':0.0'  2.  keyboard layout:      1.  `setxkbmap`:              xkb_keymap {                 xkb_keycodes  { include "evdev+aliases(qwerty)" };                 xkb_types     { include "complete"  };                 xkb_compat    { include "complete"  };                 xkb_symbols   { include "pc+us+inet(evdev)" };                 xkb_geometry  { include "pc(pc105)" };             };      2.  `xprop`:              _xkb_rules_names(string) = "evdev", "pc105", "us", "", ""  3.  locale:      1.  locale:              c             c.utf-8             en_ag             en_ag.utf8             en_au.utf8             en_bw.utf8             en_ca.utf8             en_dk.utf8             en_gb.utf8             en_hk.utf8             en_ie.utf8             en_in             en_in.utf8             en_ng             en_ng.utf8             en_nz.utf8             en_ph.utf8             en_sg.utf8             en_us.utf8             en_za.utf8             en_zm             en_zm.utf8             en_zw.utf8             ko_kr.utf8             posix      2.  current locale:              lang=en_us.utf-8             language=en_us             lc_ctype="en_us.utf-8"             lc_numeric=en_us.utf-8             lc_time=en_us.utf-8             lc_collate="en_us.utf-8"             lc_monetary=en_us.utf-8             lc_messages="en_us.utf-8"             lc_paper=en_us.utf-8             lc_name=en_us.utf-8             lc_address=en_us.utf-8             lc_telephone=en_us.utf-8             lc_measurement=en_us.utf-8             lc_identification=en_us.utf-8             lc_all=  4.  directories:      1.  home:              /home/trongkha      2.  `${xdg_config_home}`:          environment variable `xdg_config_home` not set.          current value of `xdg_config_home` `~/.config` (`/home/trongkha/.config`).      3.  fcitx settings directory:          current fcitx settings directory `~/.config/fcitx` (`/home/trongkha/.config/fcitx`).  5.  current user:      script run trongkha (1000).  # fcitx state: 1.  executable:      found fcitx @ `/usr/bin/fcitx`.  2.  version:      fcitx version: `4.2.9.1`  3.  process:      found 3 fcitx processes:          19239 fcitx         24544 fcitx         25691 fcitx-dbus-watc  4.  `fcitx-remote`:      `fcitx-remote` works properly.  # fcitx configure ui: 1.  config tool wrapper:      found fcitx-configtool @ `/usr/bin/fcitx-configtool`.  2.  config gui gtk2:      **config gui gtk2 not found.**  3.  config gui gtk3:      found `fcitx-config-gtk3` @ `/usr/bin/fcitx-config-gtk3`.  4.  config gui kde:      **`kcmshell4` not found.**  # frontends setup: ## xim: 1.  `${xmodifiers}`:      **xmodifiers not set**      **please set environment variable xmodifiers "@im=fcitx" using tool distribution provides or add `export xmodifiers=@im=fcitx` `~/.xprofile`. see [input method related environment variables: xmodifiers](http://fcitx-im.org/wiki/input_method_related_environment_variables#xmodifiers).**     xim server name environment variable fcitx.  2.  xim_servers on root window:      xim server name same set in environment variable.  ## qt: 1.  qt4 - `${qt4_im_module}`:      **please set environment variable qt_im_module "fcitx" using tool distribution provides or add `export qt_im_module=fcitx` `~/.xprofile`. see [input method related environment variables: qt_im_module](http://fcitx-im.org/wiki/input_method_related_environment_variables#qt_im_module).**  2.  qt5 - `${qt_im_module}`:      **please set environment variable qt_im_module "fcitx" using tool distribution provides or add `export qt_im_module=fcitx` `~/.xprofile`. see [input method related environment variables: qt_im_module](http://fcitx-im.org/wiki/input_method_related_environment_variables#qt_im_module).**  3.  qt im module files:     found fcitx im module qt4: `/usr/lib/x86_64-linux-gnu/qt4/plugins/inputmethods/qtim-fcitx.so`.     found fcitx im module qt5: `/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libfcitxplatforminputcontextplugin.so`.  ## gtk: 1.  gtk - `${gtk_im_module}`:      **environment variable gtk_im_module "xim" instead of "fcitx". please check if have exported incorrectly in of init files.**     **you using xim in gtk programs.**      **to see application specific problems may have when using xim, check [hall of shame linux ime support](http://fcitx-im.org/wiki/hall_of_shame_for_linux_ime_support). other more general problems of using xim including application freezing, see [here](http://fcitx-im.org/wiki/xim).**      **please set environment variable gtk_im_module "fcitx" using tool distribution provides or add `export gtk_im_module=fcitx` `~/.xprofile`. see [input method related environment variables: gtk_im_module](http://fcitx-im.org/wiki/input_method_related_environment_variables#gtk_im_module).**  2.  `gtk-query-immodules`:      1.  gtk 2:          **cannot find `gtk-query-immodules` gtk 2**          **cannot find fcitx im module gtk 2.**      2.  gtk 3:          **cannot find `gtk-query-immodules` gtk 3**          **cannot find fcitx im module gtk 3.**  3.  gtk im module cache:      1.  gtk 2:          found immodules cache gtk `2.24.30` @ `/usr/lib/x86_64-linux-gnu/gtk-2.0/2.10.0/immodules.cache`.         version line:              # created /usr/lib/x86_64-linux-gnu/libgtk2.0-0/gtk-query-immodules-2.0 gtk+-2.24.30          found fcitx im modules gtk `2.24.30`.              "/usr/lib/x86_64-linux-gnu/gtk-2.0/2.10.0/immodules/im-fcitx.so"              "fcitx" "fcitx (flexible input method framework)" "fcitx" "/usr/share/locale" "ja:ko:zh:*"       2.  gtk 3:          found immodules cache gtk `3.18.9` @ `/usr/lib/x86_64-linux-gnu/gtk-3.0/3.0.0/immodules.cache`.         version line:              # created /usr/lib/x86_64-linux-gnu/libgtk-3-0/gtk-query-immodules-3.0 gtk+-3.18.9          found fcitx im modules gtk `3.18.9`.              "/usr/lib/x86_64-linux-gnu/gtk-3.0/3.0.0/immodules/im-fcitx.so"              "fcitx" "fcitx (flexible input method framework)" "fcitx" "/usr/share/locale" "ja:ko:zh:*"   4.  gtk im module files:      1.  gtk 2:          found gtk 2 immodule files exist.      2.  gtk 3:          found gtk 3 immodule files exist.  # configuration: ## fcitx addons: 1.  addon config dir:      found fcitx addon config directory: `/usr/share/fcitx/addon`.  2.  addon list:      1.  found 25 enabled addons:              fcitx-autoeng             fcitx-chttrans             fcitx-classic-ui             fcitx-clipboard             fcitx-dbus             fcitx-freedesktop-notify             fcitx-fullwidth-char             fcitx-hangul             fcitx-imselector             fcitx-ipc             fcitx-keyboard             fcitx-kimpanel-ui             fcitx-lua             fcitx-notificationitem             fcitx-punc             fcitx-quickphrase             fcitx-remote             fcitx-spell             fcitx-unicode             fcitx-unikey             fcitx-vk             fcitx-x11             fcitx-xim             fcitx-xkb             fcitx-xkbdbus      2.  found 0 disabled addons:  3.  addon libraries:      libraries addons found.  4.  user interface:      found 2 enabled user interface addons:          fcitx-classic-ui         fcitx-kimpanel-ui  ## input methods: 1.  found 2 enabled input methods:          fcitx-keyboard-us         unikey  2.  default input methods:      have keyboard input method "fcitx-keyboard-us" correctly added default input method.  # log: 1.  `date`:          sat oct 29 19:09:27 kst 2016  2.  `~/.config/fcitx/log/`:          total 0         -rw-rw-r-- 1 trongkha trongkha 0 oct 29 19:00 crash.log  3.  `~/.config/fcitx/log/crash.log`: 

on machine fcitx got autostarted im-config under (x)ubuntu 16.04 see /usr/share/im-config/ when deinstalled fcitx packages, im-config still invoke fcitx. therefore recommend check if have im-config installed , how configured. (in case im-config autostarted fcitx process eat memory , made machine unusable).

why relevant?

my guess im-config improperly launches (or improperly configured launch) its own fcitx binary may interfere actual packaged fcitx tool set. means while suspect running fcitx 1 came package manager in reality another, potentially older version of fcitx gets run , gets in trouble system. consequence recommendations above reinstall fcitx not change/improve anything.

what im-config set found in /usr/share/im-config/

i had behaviour on machine , either packaging bug or legacy configuration bug or upgrade bug (i had ubuntu kylin installed , dist-upgraded multiple times). recommend backup im-config configuration files in /usr/share/im-config/, , purge im-config, delete files in /usr/share/im-config/ if , reinstall clean, fresh installation of im-config.