编辑/etc/inittab文件
# inittab is only used by upstart for the default runlevel.## adding other configuration here will have no effect on your system.## system initialization is started by /etc/init/rcs.conf## individual runlevels are started by /etc/init/rc.conf## ctrl-alt-delete is handled by /etc/init/control-alt-delete.conf## terminal gettys are handled by /etc/init/tty.conf and /etc/init/serial.conf,# with configuration in /etc/sysconfig/init.## for information on how to write upstart event handlers, or how# upstart works, see init(5), init(8), and initctl(8).## default runlevel. the runlevels used are:# 0 - halt (do not set initdefault to this)# 1 - single user mode# 2 - multiuser, without nfs (the same as 3, if you do not have networking)# 3 - full multiuser mode# 4 - unused# 5 - x11# 6 - reboot (do not set initdefault to this)#id:3:initdefault:
找到这行代码：id:3:initdefault:
它定义linux进入系统后执行的init动作级别，共有以下6个级别：
级别0，挂起、关机模式;
级别1，单用户模式;
级别2，多用户模式，但没有网络功能;
级别3，全功能的单用户模式;
级别4，没用到;
级别5，x11模式，也就是图形化界面模式;
级别6，重起模式。
将原来的“3”修改成“5”，然后reboot重启系统即可。
推荐教程：linux教程
以上就是linux怎么在开机时进入图形界面的详细内容。