gnome-terminal doesn't work maybe because of locale setting - locale

Question

I installed Antergos (easy version of Arch) with the Japanese environment.
But I wanted to chaned the language to English, so I reffer the wiki article then run some commands after uncomment #en_US.UTF-8 UTF-8 in /etc/locale.gen and edit /etc/locale.conf into following:
LANG=en_US.UTF-8
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=
The problem starts from here.
I restarted my computer and found that gnome-terminal doesn't work.
I substituted eshell on Emacs and run gnome-terminal command, then got error messages:
(process:1202): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
Error constructing proxy for org.gnome.Terminal:/org/gnome/Terminal/Factory0: Error calling StartServiceByName for org.gnome.Terminal: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.gnome.Terminal exited with status 8
The output of locale command is following:
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=ja_JP.utf8
LC_TIME=ja_JP.utf8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=ja_JP.utf8
LC_MESSAGES="en_US.UTF-8"
LC_PAPER=ja_JP.utf8
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT=ja_JP.utf8
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
What changes some part of locale setting into Japanese? Or other reasons which terminate gnome-terminal exist?
I have tried solutions sugestted here https://bbs.archlinux.org/viewtopic.php?id=180103 .
Thank you.

Answer 1

I had the same problem some time ago. I fixed my locale config running this command
sudo localedef -f UTF-8 -i en_US en_US.UTF-8

Answer 2

The meaning of status code 8 is documented on gnome's website here:
The environment that gnome-terminal-server is started with does not
correctly set the locale to a UTF-8 locale. Consult your
distribution's documentation on how to fix this. Note that is it not
relevant to check the locale settings from a different terminal (e.g.
xterm); what counts is the environment that the session dbus-daemon
passes to the processes it starts.
So you're right, this is probably due to locale settings. I don't quite understand all the details, but if I set ~/.xinitrc to exec gnome-session and then run startx, I get a similar error to yours.
However, if instead of running startx, I start the gdm display manager (via systemctl start gdm.service on Arch), I can spawn a gnome-terminal correctly. So if you're okay with using gdm, that may be a solution. Lightdm also works, though SLiM doesn't (from my experience).
In the past, I also had to install the vte3 package for gnome-terminal to work, so make sure that's installed as well. And FWIW, sudo gnome-terminal seems to always work.

Answer 3

Did you think to regenerate your locales after you had edited your /etc/locale.gen file ?
locale-gen
I think in your explanation you mixed the /etc/locale.gen and the /etc/locale.conf files. Be sure you edited the correct file with the correct values.

Answer 4

Ok this is how I solved it;
sudo locale-gen --purge --no-archive
Then; sudo update-initramfs -u

Answer 5

Nothing with locale worked for me. Once changed back the default python version (3.5 on ubuntu16), terminal worked just fine.