&http://www.aliyun.com/zixun/aggregation/37954.html ">NBSP; sudo xvidtune
Use the left and right buttons to adjust the screen position, and then test the button to try the satisfaction did not, satisfied, on the next step, not satisfied with the left and right button adjustment.
Press show so that the terminal has similar "1024x768" 94.50 1024 1093 1168 1376 768 769 772.
sudo gedit/etc/x11/xorg.conf, save first, make a backup.
Then find the segment of the current resolution in section "Monitor" and you should see something like Modeline "1024x768" 94.50 1024 1093 1168 1376 768 769 772 808 +hsync + VSync such a statement (if not the words will be recorded in the beginning of the Modeline, add it to the front of the endsection), according to the things just remember to modify the corresponding position of the value, After the change, save the file for the original xorg.conf, log off, and then restart X, Fix!