Keychron Q3 HE 8K udev rules (Full xbox controller compatibility)

99-keychron.rules

# 1. Device Permissions (WebHID / Keychron Launcher)
SUBSYSTEMS=="usb", ATTRS{idVendor}=="3434", MODE="0666", TAG+="uaccess"
KERNEL=="hidraw*", ATTRS{idVendor}=="3434", MODE="0666", TAG+="uaccess"

# 2. Block the keyboard, mouse, and system interfaces from acting like a joystick
KERNEL=="event*", SUBSYSTEM=="input", ATTRS{idVendor}=="3434", ATTRS{name}=="*Keyboard*", ENV{ID_INPUT_JOYSTICK}=""
KERNEL=="event*", SUBSYSTEM=="input", ATTRS{idVendor}=="3434", ATTRS{name}=="*Mouse*", ENV{ID_INPUT_JOYSTICK}=""
KERNEL=="event*", SUBSYSTEM=="input", ATTRS{idVendor}=="3434", ATTRS{name}=="*System Control*", ENV{ID_INPUT_JOYSTICK}=""
KERNEL=="event*", SUBSYSTEM=="input", ATTRS{idVendor}=="3434", ATTRS{name}=="*Consumer Control*", ENV{ID_INPUT_JOYSTICK}=""

# 3. Force the Xbox mode interface to use the official Linux Xbox Controller driver (xpad)
SUBSYSTEM=="usb", ATTR{idVendor}=="3434", ATTR{idProduct}=="1030", RUN+="/sbin/modprobe xpad"
SUBSYSTEM=="usb", ATTR{idVendor}=="3434", ATTR{idProduct}=="1030", RUN+="/bin/sh -c 'echo 3434 1030 > /sys/bus/usb/drivers/xpad/new_id'"

# 4. Standard Gamepad Mode (fallback if you use standard generic gamepad instead of Xbox)
SUBSYSTEM=="input", ATTRS{idVendor}=="3434", ATTRS{name}=="*Gamepad*", ENV{ID_INPUT_JOYSTICK}="1"

Not only the xbox mode works with more games, it also support both analog trigger as independent axis