# ROG Flow Z13 Trackpad Fix

## Overview
Fixes "Disable while typing" (DWT) + palm rejection on the ASUS ROG Flow Z13
folio keyboard touchpad. The detachable keyboard connects via USB, which causes
the touchpad to be misclassified as "external," blocking DWT in KDE Plasma.

## Files
- `fix-rog-z13-trackpad.sh` — install script (run with sudo)
- `ROG_Flow_Z13_trackpad_fix_reference.txt` — full documentation
- `rules/99-rog-z13-touchpad.rules` — standalone copy of the udev rule

## System Files Created
- `/etc/udev/rules.d/99-rog-z13-touchpad.rules` — marks touchpad as internal
- `/etc/libinput/local-overrides.quirks` — marks keyboard as internal (optional)

## Root Cause
Systemd's `65-integration.rules` sets `ID_INPUT_TOUCHPAD_INTEGRATION=external`
because the USB device is flagged `removable`. Libinput refuses DWT for external
touchpads. The built-in libinput quirk (`50-system-asus.quirks`) only marks the
keyboard as internal, not the touchpad — libinput has no `AttrTouchpadIntegration`
quirk attribute.

## Fix
A udev rule at priority 99 overrides the property to `internal` after
`65-integration.rules` (priority 65) sets it to `external`.

## Key Details
- USB VID:PID = `0b05:1a30`
- Touchpad event device: `event8` (identified by `ID_INPUT_TOUCHPAD=1`)
- Touchpad input name: `ASUSTeK Computer Inc. GZ302EA-Keyboard Touchpad`
- The keyboard and touchpad share the same `LIBINPUT_DEVICE_GROUP`, enabling DWT pairing