Linux display should be 17-inch

It is best to use a Linux display in a 17-inch manner-general Linux technology-Linux technology and application information. The following is a detailed description. I use Ubuntu 12.04. Of course I have never used it in my notebook. I have a 17-inch, 19-inch, and 22-inch display. A 17-inch display is provided by a friend, I feel a little tired when I look at the Linux screen in a 19-inch or 22-inch way, but the 17-inch screen looks very good and does not sting my eyes for a long time, the 22-inch or 19-inch data cannot be viewed for such a long time.

I don't know if it's my problem. I have a user with a display of different sizes to test it.