gcin is not launched in ubuntu arful

[allstars]

// My system
:~$ uname -a
Linux allstars-PC2 4.12.0-11-generic #12-Ubuntu SMP Fri Aug 11 12:26:42 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

:~$ lsb_release -r
Release: 17.10

I found gcin is NOT launched when I log-in into my Gnome

:~$ cat ~/.xinputrc
# im-config(8) generated on Fri, 25 Aug 2017 17:56:13 +0800
run_im gcin
# im-config signature: a4e3ea856e89d226f59d1e39af633397 -

// launch gcin manually
~$ gcin
IMOpenIM 'ibus' failed. Maybe another XIM server is running.

// grep for gcin daemon shows nothing, but it used to.
:~$ pgrep gcin
:~$

// im-config settings
:~$ im-config -m
default
gcin
ibus

ibus

// list of processes that are using ibus
:~$ ps aux |grep ibus
gdm 2453 0.0 0.0 354164 7148 tty1 Sl 10:53 0:00 ibus-daemon --xim --panel disable
gdm 2456 0.0 0.0 273528 5632 tty1 Sl 10:53 0:00 /usr/lib/ibus/ibus-dconf
gdm 2459 0.0 0.2 487708 44784 tty1 Sl 10:53 0:00 /usr/lib/ibus/ibus-x11 --kill-daemon
gdm 2574 0.0 0.0 197676 5704 tty1 Sl 10:53 0:00 /usr/lib/ibus/ibus-engine-simple
allstars 2846 0.0 0.0 354156 7344 tty2 Sl 10:53 0:00 ibus-daemon --xim --panel disable
allstars 2850 0.0 0.0 273556 5752 tty2 Sl 10:53 0:00 /usr/lib/ibus/ibus-dconf
allstars 2852 0.0 0.2 487168 45028 tty2 Sl 10:53 0:00 /usr/lib/ibus/ibus-x11 --kill-daemon
allstars 3013 0.0 0.0 197812 5704 tty2 Sl 10:53 0:00 /usr/lib/ibus/ibus-engine-simple
allstars 4774 0.0 0.0 14528 912 pts/0 S+ 11:01 0:00 grep --color=auto ibus

I guess perhaps there are some processes in Gnome that using ibus override my IME?

Thanks

[allstars (allstars.chh)]

found the answer https://lists.ubuntu.com/archives/ubuntu-desktop/2017-July/005054.html