Unix Server Tech Knowledge Base

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====== Unix Desktop Quick Reference ======

===== Adjust Desktop =====

When using old televisions as monitors, the screen will not display correctly due to overscanning, where the television sets the visible area to be smaller than the image sent it. In some TV's, this can be modified in its configuration by looking for "overscan" or even telling it the input is a computer. In other cases, we must have Unix adjust the screen so the entire desktop is visible on the television.

Assuming we are set for 1920x1080, the following is a good starting point. We are using //xrandr// to transform the desktop to 1800x1000, then moving the x and y axis -60 and -30 respectively.

<code bash>
xrandr --output "HDMI-1" --fb 1800x1000 --transform 1,0,-60,0,1,-30,0,0,1
</code>

**Note**: you will get an error message about the specified screen size being too small for the output. That is because we are defining a screen smaller than the resolution. you can safely ignore this message.

**Note**: If you need to revert to the default, the following will set the parameters to the default screen size (no transforms)

<code bash>xrandr --size 0 --transform none</code>


A full discussion is available at [[https://superuser.com/questions/1435053/how-to-use-xrandr-to-crop-part-of-my-monitor#1495587]]