2016/5/8
Not a nice day, but go
Yesterday, somehow the CentOS login interface has been ruined.
Really suffered, help brother, solved. (Don't ask me how to fix it, I don't know).
Having such a big problem, I finally know something about Linux.
First of all, the interface is out of the question, what kind of interface do you use?
Gnome,kde?
CentOS generally defaults to gnome.
corresponding to the DGM service
KDE corresponds to the KDM
And what's this for?
Service GDM Status
Service KDM Status
The graphical interface does not go in, Ctrl+alt+f1~f6, press one. Enter the character interface to save the emergency.
CTRL +alt +FN Open the analog terminal, in short, the Linux system will automatically open 6 analog terminals, and then automatically switch to one (generally switching to the graphical interface that is, the window manager is running in these 6 analog terminal).
CTRL +alt +t Open is the window environment of the terminal simulation software, it is essentially a software, and VI and so no difference, just can transfer your input to the system and thus the equivalent of a terminal. This means that the terminal is running under the window manager.
View log, log is a very important path to get information
/var/log/xorg.0.log
VI Enter the log, how to find the error record in the log
command-line mode, enter
:/The string to find
This is
:/error
command to open the graphical interface within the character interface
startx
Or
init 5
Finally, the kernel has been updated
Where is the kernel?
/usr/src/kernels/
Ls-l to see when the latest update was.
Each time the kernel is updated, there will be many versions selected at boot time, usually choosing the newest one. So don't show the rest of it. Boot,boot
/boot/grub2/grub.cfg
Comment out some of the kernel versions you don't need to use, and note that # OH. Tips: Before the comments, back up a bit
cp grub.cfg grub.cfg.bak
List software information that contains the XXXX field
rpm -qa|grep xxxx
List installation information that contains XXXX
MySQL Database graphical interface
Navicat is not good.
Workbench is a good idea.
http://dev.mysql.com/downloads/file/?id=460950
As a prerequisite, you have to install MySQL server as well as MySQL.
Yum Graphical tools
yum install yumex
No login interface for Centos 7 graphical interface