Suddenly I found that the input is often flashed back after the first startup. This is strange every time.
As a result, Baidu found a lot of information.
Find an article about setting/etc/X11/xinit/xinput. d/fcitx. conf.
Note that the last line is critical. I didn't have it in my previous configuration and cannot start it myself at each startup.
Xim = fcitx
Xim_program =/usr/bin/fcitx
Icon = "/usr/share/pixmaps/fcitx.png"
Xim_args = "-d"
Preference_program =/usr/bin/fcitx-configtool
Short_desc = "fcitx"
Gtk_im_module = fcitx
If test-F/usr/lib/qt4/plugins/inputmethods/qtim-fcitx.so | \
Test-F/usr/lib64/qt4/plugins/inputmethods/qtim-fcitx.so;
Then
Qt_im_module = fcitx
Else
Qt_im_module = xim
Fi
Depends = "fcitx"
Disable ibus ::
Gsettings set org. gnome. settings-daemon.plugins.keyboard active false
The sogou input method under fedora 20 will flash back after the input method is switched