How to enable fractional scaling in Ubuntu (GNOME)

Fractional scaling allows displays with non-integer densities to render sharper text and images. It is especially useful for HiDPI screens where traditional scaling factors may appear too large or too small. By letting users choose a precise multiplier, it ensures better visual clarity without compromising on screen real estate.

In Ubuntu using GNOME, fractional scaling relies on the capabilities of the underlying display server. Modern Wayland sessions support fractional scaling out of the box, although it remains partially experimental. On Xorg, the feature may have limitations or require additional configuration workarounds.

Enabling fractional scaling helps those with higher-resolution screens achieve optimal readability and presentation. It draws on GNOME’s advanced rendering features to maintain consistent visual quality. Technically, it adjusts the scaling-factor for each display, providing a smooth, fine-tuned interface experience.

1. Open the Settings application from the application menu.
2. Click on the Displays section in the left panel.
3. Toggle the Fractional Scaling switch to enable experimental fractional scaling.

   The availability of fractional scaling may differ based on whether you use Wayland or Xorg. By default, Wayland sessions handle fractional scaling more reliably.

4. Choose a suitable scale option from the list to adjust the display to the desired zoom level.

   For best results, test different scale factors, then pick the one that balances readability and screen space efficiently.