Yesterday, I ran yum update on the system. There were many updates. So I clicked Y as before, and the system was updated slowly. After the updates were restarted, it was tragic that the desktop could not come out. I could not download the latest NVIDIA driver installation and report all kinds of errors. So I went to the / var/log directory and saw nvidia-uninstall.log. The contents of the log file are as follows:

[root@localhost log]# cat nvidia-uninstall.log 
nvidia-installer log file '/var/log/nvidia-uninstall.log'
creation time: Tue Jan 30 16:17:23 2018
installer version: 384.69

PATH: /usr/local/maven/bin:/usr/local/protoc/bin:/datainfo/nodejsdate/globalnode/bin:/usr/local/go/bin:/datainfo/work/golang/goproject/bin:/datainfo/work/golang/goproject:/usr/local/winrar:/usr/application/nodejs/bin:/usr/local/jdk/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/usr/application/010editor:/root/bin

nvidia-installer command line:
    /usr/bin/nvidia-uninstall

Unable to load: nvidia-installer ncurses v6 user interface

Using: nvidia-installer ncurses user interface
-> Detected 56 CPUs online; setting concurrency level to 32.
-> Tagging shared libraries with chcon -t textrel_shlib_t.
-> If you plan to no longer use the NVIDIA driver, you should make sure that no X screens are configured to use the NVIDIA X driver in your X configuration file. If you used nvidia-xconfig to configure X, it may have created a backup of your original configuration. Would you like to run `nvidia-xconfig --restore-original-backup` to attempt restoration of the original X configuration file? (Answer: Yes)
ERROR: Failed to run `/usr/bin/nvidia-xconfig --restore-original-backup`:

WARNING: Unable to locate/open X configuration file.


ERROR: Unable to restore from original backup file
       '/etc/X11/xorg.conf.nvidia-xconfig-original' (No such file or
       directory)
-> Parsing log file:
-> done.
-> Validating previous installation:
ERROR: File '/usr/lib64/xorg/modules/extensions/libglx.so' is not a symbolic link.
-> done.
WARNING: Your driver installation has been altered since it was initially installed; this may happen, for example, if you have since installed the NVIDIA driver through a mechanism other than nvidia-installer (such as your distribution's native package management system).  nvidia-installer will attempt to uninstall as best it can.  Please see the file '/var/log/nvidia-uninstall.log' for details.
-> Uninstalling NVIDIA Accelerated Graphics Driver for Linux-x86_64 (1.0-38469 (384.69)):
-> DKMS module detected; removing...

So manually run / usr/bin/nvidia-uninstall to uninstall the installed NVIDIA driver, and there are errors when uninstall. For the final uninstall or uninstall completion, restart, install the latest NVIDIA driver again, the installation is relatively slow, and finally successfully install, run startx, the familiar interface comes out.