[Single solution for the entire network] Jetson Orin NX/Ubuntu 20.04LST cannot input Chinese, and no other input method can be found in the input source

If you cannot find the Chinese input method in Ubuntu 20.04 LTS system on NVIDIA Jetson Orin NX, please follow the steps below:

Check your system language settings:

Make sure the system's default language is set to Chinese. You can find this option in system settings. Open Settings and go to the Language & Region option. Make sure "Input sources" contains the Chinese option. If not, click "+ Add an input source" and select the Chinese input method.

Install Chinese input method:

Open a terminal and use the following command to install the Chinese input method:

sudo apt update
sudo apt install ibus-pinyin

This will install a basic Chinese Pinyin input method.

Configure input method:

Open system settings and go to Keyboard options. Add Chinese input method (Pinyin, etc.) in "Input Sources".

If you still cannot find the Chinese input method in the input source option of the system settings after installing the ibus-pinyin input method, it may be because the input method configuration file is not loaded correctly or the input method service is not started. Please follow these steps to try to resolve this issue:

1. Check if ibus is running:
Open a terminal and enter the following command to check if ibus is running:

ibus-daemon --xim --replace --daemonize

If ibus is not running, the above command will start ibus. Then try reopening the system settings and see if you can find the Chinese input method.
2. Manually add the input method:
If the above steps still cannot solve the problem, you can try to manually add the input method. Enter the following command in the terminal to add the Chinese Pinyin input method:

gsettings set org.gnome.desktop.input-sources sources "[('xkb', 'us'), ('ibus', 'pinyin')]"

This will add the Chinese Pinyin input method to your input sources. You can then try to reopen the system settings and see if you can find the Chinese input method.

After a lot of hard work, I finally solved it through the above method

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