Galaxy Kylin login input password prompt failed to start the session

During the use of the Galaxy Kylin system, due to the execution of update, when starting the device to log in, when entering the password to log in, it prompts "Failed to start the session", and cannot enter the desktop.

Solution:

    1、ctrl+alt+f1切换到tty1（或使用ssh等远程工具登录到设备，此时ssh是可以正常登录的）；
    2、登录；
    3、联网状态下输入命令：sudo apt install mate-session-manager --reinstall
    4、reboot重启。

In the process of solving this problem, it is also found that the relevant Ubuntu system login process shows a "failed to start session" or "Failed to start session" prompt and cannot enter the desktop. The solution is similar to the above, the difference is that the input command is different. Of course, the following methods have not been verified by themselves. The command entered is:

sudo apt-get install ubuntu-session
或
sudo apt-get install ubuntu-desktop  

There are other solutions, see Reference 4.

References

Reference 1: The Galaxy Kirin v10 login prompts that the session failed to start
Reference 2: The solution to the Ubuntu login prompt "failed to start session"
Reference 3: The solution to the Ubuntu login prompt "Failed to start session"
Reference 4: The Ubuntu input is correct Password keeps stuck on login screen