Hello, I am a new user of Kali Linux.

I have a problem on the right and left edge of my screen at a resolution of 1920x1080 has a black frame, and can not be fullscreen according to the monitor display.
For this 1920x1080 resolution, I did it manually with xrandr mode, (because there is no choice in the display settings).

My question: How do I set the resolution so that the display becomes fullscreen without black frames on the left and right of the monitor?

Best regards & thank you