This might be a really good time to talk about ways of exiting X when started in this way. In order of preference:
CTRL-ALT-Backspace: This hopefully causes X to immediately terminate, along with all X applications that are running. Of course, during the configuration process, you don't have any applications running, so this is not a problem (and in fact, at this point, this is your best way to exit X).
SSH into the box, and "pkill Xorg", which may kill the X process, and may return you to a usable console.
SSH into the box and reboot it.
Reset or power button. Sometimes things go really bad. Yes, it is usually good to get X running before you load critical applications on the system. Sometimes, a bad X configuration will hang the entire machine to the point that only a hard reset will resolve the problem.
Fortunately for us, CTRL-ALT-Backspace does the job here, and we are returned to a command prompt. So now we need to see if we can figure out what is wrong. First, we should look at what Xorg thinks is going on, and that is recorded in the file /var/log/Xorg.0.log. In this case, it appears that X thinks all is running fine, there are no obviously significant errors shown in the log (lines that start with an "(EE)" are errors).
# X -configure
# X -config xorg.conf.new ## 确定鼠标可以移动，CTRL-ALT-Backspace退出X
# gtf 1600 1200 60 ###指定目标分辨率和刷新率,注意空格
# 1600x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 160.96 MHz
Modeline "1600x1200_60.00" 160.96 1600 1704 1880 2160 1200 1201 1204 1242 -HSync +Vsync
把 “Modeline …… ”整行添加到 Section "Monitor"
# X -config xorg.conf.new ## 确定鼠标还可以移动，CTRL-ALT-Backspace退出X
# cp /root/xorg.conf.new /etc/X11/xorg.conf