DispCtrl (dispctrl-linux) Package name

# DispCtrl for Linux

DispCtrl for Linux brings Windows 11–style display controls and window management to X11 desktops.

Features include:

• Display temperature and dimming — warm or dim displays using their gamma ramps.
• Night-light scheduling — automatically apply display settings on a schedule.
• Display arrangement — manage multi-monitor layouts.
• Laptop backlight control — adjust the built-in display's backlight.
• Snap layouts and Snap Assist — bring Windows 11–style window snapping to X11 desktops.

A lightweight background engine starts at login and keeps your settings applied. Both the graphical interface and the dispctrl-linux command-line tool communicate with this engine.

## Requirements and Limitations

### X11 Required

DispCtrl requires an X11 session. Wayland compositors control gamma ramps and window placement, so these features cannot be managed directly by DispCtrl under Wayland.

### External Monitor Brightness

The Snap package cannot control an external monitor's hardware brightness through DDC/CI because strict Snap confinement prevents access to the required I²C buses.

For external-monitor DDC/CI support, use the .deb package or the release tarball instead.

### Laptop Backlight Permissions

Laptop backlight control requires an additional permission that the Snap package does not connect automatically.

Grant it with:

```bash sudo snap connect dispctrl-linux:login-session-control ```

## Credits

DispCtrl for Linux is a Linux port of [DispCtrl](https://github.com/jesvijonathan/DispCtrl), originally created by [Jesvi Jonathan](https://github.com/jesvijonathan).

## Documentation

For Linux-specific installation instructions, configuration details, and troubleshooting, see the [Linux documentation](https://github.com/HaythmKenway/DispCtrl/blob/master/docs/LINUX.md).