运行startx命令显示如下：

gnome-session[19174]:

devkit-power-gobject-WARNING: Couldn't connect to system bus: Failed to

connect to socket /var/run/dbus/system_bus_socket: No such file or

directory

gnome-session[19174]: WARNING: Could not connect to

ConsoleKit: Failed to connect to socket /var/run/dbus/system_bus_socket:

No such file or directory

gnome-session[19174]: WARNING: Could

not connect to ConsoleKit: Failed to connect to socket

/var/run/dbus/system_bus_socket: No such file or directory

解决方法：

经过一翻查找资料，发现跟图形模式默认启动的服务有关，用“chkconfig --list|grep 5:on”命令看看图形模式默认启动的服务，下面的服务改成自启动后我的就好了：

NetworkManager

abrt-ccpp

abrtd

acpid

atd

auditd

blk-availability

cpuspeed

crond

cups

haldaemon

irqbalance

kdump

lvm2-monitor

mdmonitor

messagebus

netfs

network

portreserve

postfix

rsyslog

spice-vdagentd

sshd

sysstat

udev-post

xinetd