After the video card driver is installed, you cannot enter the graphic interface.

Because of myself, the best things I want to do in everything (this is nice to say, and it is not enough to say nice to hear ). Download and install the graphics card driver (Note: My video card is ATI readon 4300, so it cannot solve your problem ). After the installation, you will find that you cannot enter the graphic interface when restarting. And when you view the Service Activation status, you find that two services are not enabled properly (they are: plymouth-quit-wait.service and NetworkManager-wait-online.service ). Disable auto-start upon startup
The problem persists, so I try to uninstall the two software again, but the problem persists.

So I thought about whether the software was installed. This reminds me that the installation of the video card driver may be related to this. So start the instance and enter the console (you can still enter the CLI interface without accessing the graphical interface (CTRL + ALT + 2-6 can switch to cli )). Enter (enter the directory of your graphics driver) ../amd-driver-installer-catalyst-13.1-legacy-linux-x86.x86_64.run-- Uninstall
After uninstallation, restart the computer as instructed. The familiar interface is introduced again, and the problem is solved.

If you use the yum command to install the original graphics card driver, after installation, you cannot enter the graphical interface. You can use Yum to remove the driver package that you have installed. You can use Yum history to view the history to find its dependent package and delete it. For example:

Yum history list lists recent history

Yum history info ID: list details of a specified time

Yum history undo ID undo a change

Yum history help view help

[Cf @ CF-PC ~] $ Sudo Yum history
Loaded plug-ins: fastestmirror, langpacks, presto, refresh-packagekit
Id | Login User | Date and Time | operation | change
-------------------------------------------------------------------------------
83 | root <root> | erase | 5
82 | cf <CF> | erase | 1 <
81 | cf <CF> | install | 5>
80 | cf <CF> | reinstall | 1
79 | cf <CF> | install | 1
78 | System <null> | I, O, u | 105 EE
77 | cf <CF> | reinstall | 1
76 | cf <CF> | I, u | 24 <
75 | cf <CF> | install | 2>
74 | System <blank> | I, u | 62
73 | cf <CF> | install | 1
72 | cf <CF> | reinstall | 1
71 | cf <CF> | install | 1
70 | System <null> | update | 18
69 | System <null> | update | 1
68 | cf <CF> | install | 3
67 | cf <CF> | install | 4
66 | cf <CF> | install | 1
65 | cf <CF> | install | 1
64 | System <null> | o, u | 12
History List
[Cf @ CF-PC ~] $