Feature: native 2-in-1 screen auto-rotation (tablet mode) support

[VisorDTE]

Summary

Add out-of-the-box support for automatic screen + touchscreen rotation on 2-in-1 / convertible laptops. Currently it is not working and requires manual setup, and the most obvious AUR helper is broken on Omarchy's Hyprland version.

Environment

• Omarchy 4.0.1-1
• Hyprland 0.56.2 (Lua-based config)
• Device: Dell Inspiron 5379 (2-in-1), Intel ISH sensor hub

Root cause (why rotation doesn't work today)

1. iio-sensor-proxy is not installed by default, so no orientation events ever reach the compositor. The hardware sensors are present and functional (accel_3d, incli_3d, dev_rotation, hinge, gyro_3d, etc.).

2. Hyprland does not auto-rotate by itself; a helper must listen for orientation and apply the monitor transform.

3. The natural helper, iio-hyprland-git (AUR), issues hyprctl keyword monitor ... transform / input:touchdevice:transform. Hyprland 0.56 with the Lua parser rejects that:

   keyword can't work with non-legacy parsers. Use eval.
   

What worked

• pacman -S iio-sensor-proxy + enable the systemd service (it is a static unit activated on demand).

• A small helper that listens to net.hadess.SensorProxy and, on each orientation change, runs:

  hyprctl eval 'hl.monitor({output="eDP-1", transform=N}); hl.device({name="elan-touchscreen", transform=N})'

  • hl.monitor reuses the existing monitor rule and only updates transform (mode/position/scale are preserved), then schedules a monitor-state refresh.
  • hl.device applies the libinput calibration matrix for the touchscreen (device transform maps to MATRICES[N]; -1 = unset).

  Orientation mapping: normal -> 0, left-up -> 1, bottom-up -> 2, right-up -> 3.

Proposal

1. Add an install option (e.g. an omarchy install entry or setup flag) that pulls iio-sensor-proxy and installs/enables a rotation helper.
2. Provide a helper that uses hyprctl eval (Lua hl.* API), since the existing AUR helper is incompatible.
3. Optionally support the Dell/other-vendor mount matrix (ACCEL_MOUNT_MATRIX via udev) and a --transform remap for devices whose accelerometer orientation doesn't match the panel.

Happy to help with a PR if this is in scope.