Сhanging the display output on a laptop

Hi. I installed Anthias on an old laptop. It has additional video ports. I connect it to the TV via HDMI.
The image is duplicated. But the laptop’s resolution is 1366x768, while the TV is full HD.
Therefore, the image on the TV is very small and in the corner of the screen. Setting GRUB_GFXMODE=1920x1080 partially helped, but the video doesn’t display on the TV. only on laptop screen. However, the default Screenly Weather Widget asset displays correctly on the TV.
Is there a way to change the default display for Anthias?

@TeenKode, Anthias doesn’t support changing the display output on a laptop natively.

In the meantime, feel free to explore other boot-related (GRUB) settings .