Why, when I write the xrandr command, does it give me only one single permission, but does not show the rest?

Question

X Window System

The fact is that the resolution supported by my display is much larger than 1024x768
Where can I edit the file to change the resolution to the maximum possible
?

Answer 1

If xrandr does not show permissions, then the X server does not see any other supported permissions. xrandr can manually add permissions and switch to them.